Four point masses, each of value m, are ...

Four point masses, each of value `m`, are placed at the corners of square `ABCD` of side `l`. The moment of inertia of this system about an axis passing through `A` and parallel to `BD` is -

`3ml^(2)`

`ml^(2)`

`2ml^(2)`

`sqrt(3)ml^(2)`

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