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If hat(a),hat(b) and hat(c) are unit vec...

If `hat(a),hat(b)` and `hat(c)` are unit vectors, then `|hat(a)-hat(b)|^(2)+|hat(b)-hat(c)|^(2)+|hat(c)-hat(a)|^(2)` does not exceed

A

`4`

B

`9`

C

`8`

D

`6`

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The correct Answer is:
A
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