Two Blocks Are Connected by a String That Goes Over

Two blocks are connected by a string that goes over an ideal pulley as shown in the figure.Block A has a mass of 3.00 kg and can slide over a rough plane inclined 30.0° to the horizontal.The coefficient of kinetic friction between block A and the plane is 0.400.Block B has a mass of 2.77 kg.What is the acceleration of the blocks?

A) 0.392 m/s²
B) 1.96 m/s²
C) 3.12 m/s²
D) 5.35 m/s²
E) 0.00 m/s²