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

Multiple Choice

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's acceleration equal to zero?

A) 2 < t < 3, 5 < t < 6
B) t = 2, t = 3, t = 5, t = 6
C) 0 < t < 2, 6 < t < 7
D) t = 0, t = 4, t = 7