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If vecaxxvecb=vecc,vecb xx vecc=veca, wh...

If `vecaxxvecb=vecc,vecb xx vecc=veca,` where `vecc != vec0,` then

A

`|veca|=|vecc|,|vecb|=1`

B

`|veca|=|vecb|,|vec|=1`

C

`|vecb|=|vecc|,|veca|=1`

D

`|veca|ne |vecc|`

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