\textbf{127.} The region bounded by a $2\times 5$ rectangle and a semicircle with diameter 3 units rotates around line $\Delta$. The volume of the resulting solid is how many times $\pi$?
\textit{[Figure: Rectangle with semicircle, dimensions 5 and 2 shown, axis $\Delta$]}
\begin{itemize}
\item[(1)] $15$
\item[(2)] $15/5$
\item[(3)] $16/5$
\item[(4)] $17$
\end{itemize}