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Four identical thin rods each of mass `M` and length `l`, from a square frame. Moment of inertia of this frame about an axis through the centre of the square and perpendicular to its plane is

A

`4/3 MI^(2)`

B

`2/ MI^(2)`

C

`13/3 MI^(2)`

D

`1/3 MI^(2)`

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a
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