Objects a and B,of Mass M and 2M Respectively,are Each $\mu$

Multiple Choice

Objects A and B,of mass M and 2M respectively,are each pushed a distance d straight up an inclined plane by a force F parallel to the plane.The coefficient of kinetic friction between each mass and the plane has the same value $\mu$ _k.At the highest point,

A) K_A = Fd = K_B.
B) K_A = (F - $\mu$ _kMg cos $\theta$ ) d;K_B = (F -2 $\mu$ _kMg cos $\theta$ ) d.
C) K_A = (F - Mg sin $\theta$ ) d;K_B = (F- 2Mg sin $\theta$ ) d.
D) K_A = (F - Mg sin $\theta$ - $\mu$ _kMg cos $\theta$ ) d;K_B = (F - Mg sin $\theta$ - $\mu$ _kMg cos $\theta$ ) d.
E) K_A = (F - Mg sin $\theta$ - $\mu$ _kMg cos $\theta$ ) d;K_B = (F - 2Mg sin $\theta$ - 2 $\mu$ _kMg cos $\theta$ ) d.