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Let veca=veci-veck,vecb=xveci+vecj+(1-x)...

Let `veca=veci-veck,vecb=xveci+vecj+(1-x)veck` and `vecc=yveci+xvecj+(1+x-y)veck`. Then `[veca vecb vecc]` depends on

A

only `x`

B

only `y`

C

neither `x` nor `y`

D

both `x` and `y`

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