答案：C
$\begin{array}{cl}
& 2^{13} + 2^4 +3 \\
= & 2^{13} + 2^4 + 2^1 + 1 \\
= & 10~000~000~010~011_2
\end{array}$
$\begin{array}{cl}
& 2^{13} + 2^4 +3 \\
= & 2^{13} + 2^4 + 2^1 + 1 \\
= & 10~000~000~010~011_2
\end{array}$
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