In the figure shown, a block of weight 10 N resting on a horizontal surface. The coefficent of static friction between the block and the surface `mu_(s)=0.4` . A force of 3.5 N will keep the block in uniform motion, once it has been set in motion. A horizontal force force of 3N is applid to the block, then the block will
A. Move over the surface with constant velocity
B. Move having accelerated motion over the surface
C. Not move
D. First it will move with a constant velocity for some time and then will have accelerated motion
