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In triangle ABC (Figure), which of the ...

In triangle ABC (Figure), which of the following is not true:
`(A) vec(AB)+ vec(BC)+ vec(CA)=vec0`
`(B) vec(AB)+ vec(BC)- vec(AC) =vec0`
`(C) vec(AB)+ vec(BC)- vec(CA)=vec0`
`(D) vec(AB)+ vec(CB)+ vec(CA)=vec0`

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