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A) k = 0 and n = 1

B) k = 1 and n = 0

C) k = n = 1

D) k > 1

E) n > 1

Can anyone help me understand this? I'm thinking that the answer is B, because if x = 1 then the equation will be greater than zero, and the equation starts below the x-axis. So somewhere in the interval [0,1], the line must cross the x=axis. Hence B is the answer. Is this correct?