A cuboidal piece of wood has dimensions $a, b$ and $c$. Its relative density is $d$. It is floating in a large body of water such that side a is vertical. It is pushed down a bit and released. The time period of $SHM$ executed by it is :
  • A$2\pi \,\sqrt {\frac{{abc}}{g}} $
  • B$2\pi \,\sqrt {\frac{g}{{d\,a}}} $
  • C$2\pi \,\sqrt {\frac{{bc}}{{d\,g}}} $
  • D$2\pi \,\sqrt {\frac{{d\,a}}{g}} $
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