If alpha,beta,gamma are the roots of x^3...

If `alpha,beta,gamma` are the roots of `x^3-x^2-1=0` then the value of `(1+alpha)/(1-alpha)+(1+beta)/(1-beta)+(1+gamma)/(1-gamma)` is equal to

A

-7

B

-6

C

-5

D

-4

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The correct Answer is:

C

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