Block A, with a Mass of 10 Kg, Rests on a 35

Multiple Choice

Block A, with a mass of 10 kg, rests on a 35 $\degree$ incline. The coefficient of static friction is 0.40. An attached string is parallel to the incline and passes over a massless, frictionless pulley at the top. The largest mass m_B, of block B, attached to the dangling end, for which A begins to slide down the incline is:

A) 2.5 kg
B) 3.5 kg
C) 5.9 kg
D) 9.0 kg
E) 10.5 kg