If a^(2) + b^(2) + c^(2)+ 3 = 2 (a + b ...

If ` a^(2) + b^(2) + c^(2)+ 3 = 2 (a + b + c) ` then the value of (a + b+ c ) is

A

2

B

6

C

16

D

12

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The correct Answer is:

D

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