\textbf{125.} According to the figure below, $O$ is the intersection point of the diagonals of rectangle $ABCD$ ($\hat{B} = 90°$). Segments $OM$ and $ON$ are drawn parallel to $AD$ and $BC$ respectively. The ratio $\dfrac{AM}{BN}$ is:
\textit{[Figure: Rectangle ABCD with point O at intersection of diagonals, M and N on AB, segments OM and ON drawn parallel to AD and BC]}
\begin{itemize}
\item[(1)] 1
\item[(2)] 2
\item[(3)] Less than 1
\item[(4)] Greater than 1 and less than 2
\end{itemize}