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f: (0,infinity) -> R

f(x)=log_3(x) (the base is 3)

I need to find the number of "n" values ( n is a natural number except 0 N*) such that this inequation: f(n/x) >= 1 to have just 3 solutions in N*.

A. infinity

B. 6

C. 9

D. 26

E. 3 (correct answer)