Why "A" stands,Caeser/Joseph and Kars are faster than light
First of all, there are 6 scans which all prove the existence of faster than light JoJo characters (three faster than light feats perfromed by a Stand, with one statement with calling Star Platinum faster than light) here they are, all for your viewing pleasure.
Kars reacting to and blocking a beam of light from point blank range
Joseph and Caeser both reacting to a beam of light being shot at them
Silver Chariot intercepting Hanged Man which is stated to move at the speed of light
And by the way, Silver Chariot knowing the trajectory is irrelevant. Even if I was to know my friend is going to put a laser pointer towards me I myself would be far too slow to intercept it. And what's funny is that in the third scan, Polnareff could not have known Hanged Man's exact trajectory and let me state why. Both of his eyes were open and therefore Hanged Man could have gone in either one, therefore Polnareff/Silver Chariot had to utilise some form of reaction speed to know which eye it was going to go in to intercept it in the first place.
Silver Chariot being able to intercept rays of light fired by a star, they are described to be like laser beams as stated by Joseph (who has experience dealing with laser beams, as shown in the 2nd faster than light feat) the fact these laser beams bounce of Silver Chariots sword prove them to behave like light, as light bounces off shiny and smooth surfaces such as metal etc.
Star Platinum being described as being able to "Surpass The Speed Of Light", keep in mind that this statement is seperated from Star Platinum being able to stop time, therefore the argument of "Star Platinum can move faster than light due to time stop" now holds no weight. Also there is no mistranslation, the original Star Platinum stat page contains the kanji for "Speed of Light" as shown here
To those people who try to refute FTL JoJo with scans of lets say Jotaro being hit by a car is completely false due to how anomalous that is, due to the obvious showings of bullet timing feats (reacting and grabbing a bullet shot point blank). The same goes with Jotaro being hit by DIO's knives, when you see how often Star Platinum deals with faster than light stands (such as squaring off against Silver Chariot) being hit by knives (DIO) is just anomalous and does not fit with regular showings, which is the faster than light feats backed up with WoG.
Those people who argue consistency yet ignore the blatent consistency of faster than light JoJo is completely hilarious.
Rant Over.