\textbf{133-} The smallest circle passing through the two points $A(2,5)$ and $B(-4,1)$ intersects the $x$-axis at what length?
\begin{itemize}
\item[(1)] $1\ ,\ -3$
\item[(2)] $5\ ,\ -3$
\item[(3)] $2\ ,\ -1$
\item[(4)] $3\ ,\ -2$
\end{itemize}