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If `vec a, vec b, vec c` are three vectors such that `vec a + vec b + vec c = vec 0` and `|vec a| = 2, |vec b| = 3, |vec c| = 5`, then the value of `vec a . vec b + vec b . vec c + vec c . vec a =`

A

1)0

B

2)1

C

3)-19

D

4)-25

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The correct Answer is:
C
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