A chops the ball high in the air, with so much spin it bounces once on X's side of the table, then returns over the net without being touched by X and bounces on A's side of the table. A then catches the ball.

A、 point to X as the ball returned to and touched A’s side of the table and A then failed to make a good return
B、 let
C、 point to A as his return touched first X’s side of the table, then A’s side, without being touched by X’s racket
D、 point to X as it is illegal to put this much spin on the ball