If A(1, -1, -3), B(2, 1, -2), C(-5, 2, -...

If A(1, -1, -3), B(2, 1, -2), C(-5, 2, -6) are the vertices of a `DeltaABC`, then the length of internal bisector of angle A is

A

`3/4sqrt(10)`

B

`1/2sqrt(10)`

C

`1/4sqrt(10)`

D

`sqrt(10)`

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The correct Answer is:

A

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