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Let veca , vecb,vecc be three non zero ...

Let `veca , vecb,vecc` be three non zero vectors which are pair wise non collinear and `veca+vec3b` is colinear with `vecc` and `vecb+vec2c` is colinear with `veca` then `veca+3b+6vecc` is

A

`vec a`

B

`vec b`

C

`vec 0`

D

`vec a+vec c`

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C
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