After the referee's ready-for-play signal, team A players move to the line and snapper A5 puts both hands on the ball and legally adjusts it. As A1 is calling signals, A5 slowlyand without simulating action at the snap removes his right hand from the ball in order to make it easier to talk to A1.
A. No foul on A5 because he still had his left hand on the ball.
B. No foul on A5 even if he had not kept his left hand on the ball.
C. Snap infraction on A5, a dead ball foul.