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Let f(x) be a non-zero polynomial of deg...

Let `f(x)` be a non-zero polynomial of degree `4`. Extremum points of `f(x)` are `0,-1,1`.
If `f(k)=f(0)` then.

A

four irrational numbers.

B

four rational numbers.

C

two irrational and two rational numbers.

D

two irrational and one rational number.

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The correct Answer is:
C
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