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Two vertices of a triangle hence positio...

Two vertices of a triangle hence position vetors `2veci+4vecj-5veck` and `veci+3vecj-3veck`.If the position vector of the centroid is `vecj+2veck`,then the position vector of the third vertex is

A

`-3veci-4vecj+14veck`

B

`3veci+2vecj-14veck`

C

`-3veci+2vecj-14veck`

D

`3veci-2vecj+14veck`

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The correct Answer is:
A
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