A particle moves along a circle of radius \( \frac{40}{\pi} \mathrm{m} \) with constant tangenti...

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A particle moves along a circle of radius \( \frac{40}{\pi} \mathrm{m} \) with constant tangential acceleration. If the velocity of the particle is 100 \( \mathrm{m} / \mathrm{s} \) at the end of the 4 th revolution after motion has begin, the tangential acceleration is
a. \( \frac{125}{8} \)
b. \( \frac{35}{6} \)
c. \( \frac{26}{3} \)
d. \( \frac{5}{4} \)
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