If the magnitude of F1 is greater than the magnitude of F2, then the box is
Aaccelerating in the direction of F1
Bmoving at constant speed in the direction of F1
Cmoving at constant speed in the direction of F2
Daccelerating in the direction of F2
Aaccelerating in the direction of F1
Bmoving at constant speed in the direction of F1
Cmoving at constant speed in the direction of F2
Daccelerating in the direction of F2