Two Identical Balls Have the Same Amount of Charge, but the Charge

Two identical balls have the same amount of charge, but the charge on ball A is positive and the charge on ball B is negative. The balls are placed on a smooth, level, frictionless table whose top is an insulator. Which of the following is true?

A) They will move together with constant acceleration.
B) Since the force on A is equal but opposite to the force on B, they will not move.
C) Since the force on both balls is negative, they will move in the negative direction.
D) None of the above is correct.