Ayşe, Bora, and Can have a total of 72 marbles.
\begin{itemize}
\item Ayşe sets aside half of her marbles for Bora,
\item Bora sets aside one-third of his marbles for Can,
\item Can sets aside one-quarter of his marbles for Ayşe\\
and they give these set-aside marbles to each other at the same time.
\end{itemize}
Given that no one's number of marbles changes in the end, how many marbles does Ayşe have?\\
A) 12\\
B) 16\\
C) 18\\
D) 20\\
E) 24