Which function has a simplified base of 4 cube root of 4 ?

In choice A, the part raised to x is the base [?]—rewrite (∛16)^(2x) as ((∛16)^2)^x. Since 16 = 2^4, (∛16)^2 = 16^(2/3) = 2^(8/3) = 4∛4. So choice A has the requested simplified base, 4∛4.

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