The vector bar(AB)=3hati+4hatk and bar(A...

The vector `bar(AB)=3hati+4hatk and bar(AC)=5hati-2hatj+4hatk` are the sides of a triangle ABC. The length of the median through A is

A

`sqrt(5)`

B

`sqrt(14)`

C

`sqrt(17)`

D

`sqrt(18)`

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The correct Answer is:

D

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