simplify qty A:

Take \(2^{29}\) common

\(\frac{2^{29}(2-1)}{2}\) this reduces to

\(\frac{2^{29}}{2^1}\)

when \(2^1\) goes into the numerator the expression further simplifies to:

\(2^{29} * 2^{-1} = 2^{28}\)

option C
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This is my response to the question and may be incorrect. Feel free to rectify any mistakes