If alpha, beta and gamma are the roots o...

If `alpha, beta` and `gamma` are the roots of the equation `x^(3)-8x+8=0`, then `sum alpha^(2)` and `sum (1)/(alpha beta)` are respectively

A

0 and `-16`

B

16 and 8

C

`-16` and 0

D

16 and 0

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The correct Answer is:

D

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