If sin^(2) x - 2 sin x - 1 = 0 has exac...

If `sin^(2) x - 2 sin x - 1 = 0 ` has exactly four different solutions in `x in [0, n pi]` , then value/ values of n is / are `(n in Z)`

A

5

B

3

C

4

D

6

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The correct Answer is:

A, C

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