The Figure Shows the Velocity V or Position S of a Body

The figure shows the velocity v or position s of a body moving along a coordinate line as a function of time t . Use the
figure to answer the question.
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$$\text { When is the body moving backward? }$$

A) 0 < t < 4
B) 7 < t < 10
C) 0 < t < 2, 6 < t < 7
D) 4 < t < 7