If the roots of the equation (a-1) (x^(2...

If the roots of the equation `(a-1) (x^(2)-x+1)^(2)=(a+1) (x^(4)+x^(2)+1)`
are real and distinct then the value of `a in`

A

`(-oo, 3]`

B

`(-oo, -2] uu [2, oo)`

C

`[-2, 2]`

D

`[-3, oo)`

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The correct Answer is:

B

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