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Let veca,vecb ,vecc be three nonzero vec...

Let `veca,vecb ,vecc` be three nonzero vectors such that `veca+vecb+vecc=vec0 and lambdavecbxxveca+vecbxxvecc+veccxxveca=0,` then `lambda` is

A

1

B

2

C

-1

D

-2

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