$A$ block of mass $M$ is placed on a rough inclined plane with an angle of inclination $\theta$ and coefficient of friction $\mu$. $A$ force $F$ is applied parallel to the inclined plane as shown in the figure,such that the block just starts moving upward. The value of $F$ is:

• A
  $M g \sin \theta - \mu M g \cos \theta$
• B
  $M g \sin \theta + \mu M g \cos \theta$
• C
  $M g \sin \theta$
• D
  $\mu M g \cos \theta$