The moment of inertia of a uniform cylinder of length \( l \) and r...

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The moment of inertia of a uniform cylinder of length \( l \) and radius \( R \) about its perpendicular bisector is \( I \). What is the ratio \( l / \mathrm{R} \) such that the moment of inertia is minimum?
(A) \( \frac{3}{\sqrt{2}} \)
(B) \( \sqrt{\frac{3}{2}} \)
(C) \( \frac{\sqrt{3}}{2} \)
(D) 1
\( \mathrm{P} \)
W
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