Racket b is obviously fake because of the price. If you were to buy it, it would probably be a generic racket with the lcw paintscheme. C is definitely fake too as you would usually pay a premium for a jp racket not for it to be cheaper. I also think a could be fake as well. I think I have heard that seller mentioned on this forum before as selling fake rackets. If you can, buy from a trusted site such as e78.com which have many reviews on here. They also sell the racket you are after.
I want to kick myself, when I had the time I didn't buy the AT 900 LCW. I usually buy stuff from mybadmintonstore.com. Now this racket is hard to find. I am desperate. Obviously I want the original one. I have 2 SP coded and one JP coded AT 900P already. But I need the LCW one, looks cool.
It's fairly easy to find the yonex rackets though. Just click on the yonex on the left of the toolbar at the top of the screen and then click on the picture of the racket. Then when you want to order click on the English button at the top of the screen and email the owner Mr Chan. Or can use a webpage translator.
The two sellers Xiping and Big.show414 are known sellers of replica rackets. They have even classified the racket as Class G which effectively says they are not Yonex certified. Not to judge a racket's quality by its price, but surely you can see that just on price alone in this instance, that the B and C rackets are more likely replicas than originals.