Ok. I'll assume that the two Hall of Famers also aren't two Celtics, who are also different from the guy who never made it to the All Star Game.
Player D is the player that I'd guess never made an All Star team, and (bonus points) I think it's Stephon Marbury.
I think player A is one of the Hall of Famers, and that Player C is the other one.
The Celtics, I think, are Players F and B