The Drawing Below Is Supposed to Be a Free-Body Diagram $\vec{F}_{S F}$

Multiple Choice

The drawing below is supposed to be a free-body diagram of a box that sits without slipping on the back of a truck that is moving to the right but is slowing down. Is the diagram correct?

A) Yes.
B) No, $\vec{F}_{S F}$ should point leftward.
C) No, the $\vec{F}_{S F}$ label should be $\vec{F}_{K F}$ .
D) No, there should be a leftward drag force.
E) No, $\left|\vec{F}_{N}\right|$ should not be equal to $\left|\vec{F}_{g}\right|$ .
F) No, there is some other problem (specify) .