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If u = log (x^(3) + y^(3) + z^(3) - 3xyz...

If `u = log (x^(3) + y^(3) + z^(3) - 3xyz)`, then `(x + y + z)(u_(x) + u_(y) + u_(z))` is equal to

A

0

B

x + y + z

C

2

D

3

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The correct Answer is:
D
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