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If \(n\) is a positive integer, then \((-2^n)^{-2} +(2^{-n})^2 =\)
A. \(0\)
B. \(2^{-2n}\)
C. \(2^{2n}\)
D. \(2^{-2n+1}\)
E. \(2^{2n+1}\)
Answer: D
Source: GMAT Prep
A. \(0\)
B. \(2^{-2n}\)
C. \(2^{2n}\)
D. \(2^{-2n+1}\)
E. \(2^{2n+1}\)
Answer: D
Source: GMAT Prep
