If alpha, beta,gama are the cube roots o...

If alpha, beta,gama are the cube roots of p, then for any x,y and z, `frac{x(alpha)+y(beta)+z(gama)}{x(beta)+y(gama)+z(gama)} = `

A

`A.frac{1}{2}(-1-isqrt3)`

B

`B.frac{1}{2}(1+isqrt3)`

C

`C.frac{1}{2}(1-isqrt3)`

D

`D.frac{1}{2}(-1+isqrt3)`

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