If m is the minimum value of k for which the function f(x)=x√kx−x² is increasing in the interval [0,3] and M is the maximum value of f in [0,3] when k=m, then the ordered pair (m,M) is equal to :
A (4,3√2)
B (5,3√6)
C 4,3√3)
D (3,3√3)

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