If \( f^{\prime}(x)=(x-a)^{2 n}(x-b)^{2 m+1} \) where \( m, n \) Î ...

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If \( f^{\prime}(x)=(x-a)^{2 n}(x-b)^{2 m+1} \) where \( m, n \) Î \( N \), then
\( \mathrm{P} \)
(A) \( x=a \) is a point of minimum
\( \mathrm{W} \)
(B) \( x=a \) is a point of maximum
(C) \( x=a \) is not a point of maximum or minimum
(D) None of these.
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