Figure Q2.24 shows a motion diagram with the clock reading (in seconds) shown at each position. From \(t=9 \mathrm{~s}\) to \(t=15 \mathrm{~s}\) the object is at the same position. After that, it returns along the same track. The positions of the dots for \(t \geq 16 \mathrm{~s}\) are offset for clarity. Which graph best represents the object's velocity?

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0 FIGURE Q2.24 4 5 6 7 8 23 22 21 20 A. 19 18 17 B. V 16 D. V C. V 9 to 15