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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When is the body moving forward?

A) 0 < t < 8
B) 0 < t < 3, 3 < t < 5, 5 < t < 8
C) 0 < t < 1, 3 < t < 4, 5 < t < 7
D) 0 < t < 1, 3 < t < 4, 5 < t < 7, 9 < t < 10