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A slab is subjected to two forces vec F(...

A slab is subjected to two forces `vec F_(1) and vec F_(2)` of same magnitude F as shown in the figure . Force `vec F_(2)` is in XY-plane while force `F_(1)` acts along z-axis at the point `(2 vec I + 3 vec j)` .The moment of these forces about point O will be :

A

`(3 hat i-2 hat j+ 3 hat k)F`

B

`(3 hat I -2 hat j-3 hat k)F`

C

`(3 hat I + 2 hat j - 3 hat k ) F`

D

`(3 hat I +2 hat j +3 hat k)F`

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