If f(x)=ax^2+bx+c,a,b,cepsilonR and the ...

If `f(x)=ax^2+bx+c,a,b,cepsilonR` and the equation `f(x)-x=0` has imaginary roots `alpha and beta and p and q` be the roots of equation `f(f(x)-x=0, then |(2, alpha, q),(beta, 0, alpha),(p, beta, 1)|` is (A) purely real (B) purely imaginary (C) 0 (D) none of these

A

0

B

purely real

C

purely imaginary

D

none of these

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The correct Answer is:

B

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