GMAT考题：GMATLA-PS-68

GMAT考题

For a nonnegative integer n, if the remainder is 1 when 2ⁿ is divided by 3, then which of the following must be true?

I. n is greater than zero.

II. 3ⁿ = (-3)ⁿ

III. ~$\sqrt{2^{n}}$~ is an integer.

I only

II only

I and II

I and III

II and III

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