The area of the triangle whose vertices ...

The area of the triangle whose vertices are A (1,2,3) B `(2,-l,l)` and C `(l,2,-4)` is

A

`7sqrt10squnits`

B

`1/2sqrt10squnits`

C

`7/2sqrt10squnits`

D

None of the these

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The correct Answer is:

C

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