Find the derivative.s = t3 cos t - 14t sin t - 14 cos t
A. 
= - 3t2 sin t - 14 cos t + 14 sin t
B. 
= - t3 sin t + 3t2 cos t - 14t cos t
C. 
= - t3 sin t + 3t2 cos t - 14t cos t - 28 sin t
D. 
= t3 sin t - 3t2 cos t + 14t cos t
Answer: B
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