If \( V \) is the volume of a cuboid of dimensions \( a, b, c \) and \( S \) is its surface area...

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If \( V \) is the volume of a cuboid of dimensions \( a, b, c \) and \( S \) is its surface area, then \( \frac{2}{S}\left(\frac{1}{a}+\frac{1}{b}+\frac{1}{c}\right) \) equals
(a) \( \frac{1}{V} \)
(b) \( V \)
(c) \( \frac{2}{V} \)
(d) \( 2 \mathrm{~V} \)
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