If vec(A) and vec(B)are two vectors , which of the statement is wrong

1.	If vec(A) and vec(B)are two vectors , which of the statement is wrong ?
Answer» ` VEC(A) + vec(B) = vec(B) + vec(A)` `vec(A) - vec(B) = - (vec(B) + vec(A))` `vec(A)XX vec(B) = vec(B) xx vec(A)` `vec(A) . vec(B) = vec(B) . vec(A)` ANSWER :C

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