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The vectors vec a + vec b + vec c, 2 vec...

The vectors `vec a + vec b + vec c, 2 vec a+ vec b + 3 vec c` and `vec a + 2 vec b + 3 vec c`, where `vec a, vec b`, and `vec c` are non coplanar vectors , are

A

coplanar vectors

B

collinear vectors

C

non coplanar vectors

D

mutually perpendiculat vectors

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The correct Answer is:
C
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