The Figure Shows the Speed as a Function of Time

Multiple Choice

The figure shows the speed as a function of time for an object in free fall near the surface of the earth. The object was dropped from rest in a long evacuated cylinder.
-Which one of the following statements best explains why the graph goes through the origin?

A) The object was in a vacuum.
B) The object was dropped from rest.
C) The velocity of the object was constant.
D) All v vs. t curves pass through the origin.
E) The acceleration of the object was constant.