(A) : A body of mass 10 kg is placed on a rough inclined surface `(mu = 0.7)` . The surface is inclined to horizontal at angle `30^(@)` . Acceleration of the body down the plane will be zero .
(R) : Work done against friction always converts to heat .
A. If both A and R are true and R is the correct explanation of A .
B. If both A and R are true but R is not correct explanation of A .
C. If A is false but R is false .
D. If A is false but R is true
