An Object Is Moving Along a Straight Line in the Positive

Multiple Choice

An object is moving along a straight line in the positive x direction. The graph shows its position from the starting point as a function of time. Various segments of the graph are identified by the letters A, B, C, and D.

-During which interval(s) did the object move in the negative x direction?

A) only during interval B
B) only during interval C
C) only during interval D
D) during both intervals C and D
E) The object never moved in the negative x direction.