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Let a >2 be a constant. If there are jus...

Let `a >2` be a constant. If there are just 18 positive integers satisfying the inequality `(x-a)(x-2a)(x-a^2)<0,` then the value of `a` is ____________

A

a' is composite

B

a' is odd

C

a'a is greater than 8

D

a' lies in the interval `(3,11)`

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