A quadrilateral $ABCD$ with vertices $A(1, 1)$, $B(5, 1)$, $C(5, 3)$, $D(1, 3)$ is transformed by the matrix $M = \begin{pmatrix} 0 & -1 \\ 1 & 0 \end{pmatrix}$ followed by a translation of $\langle 2, -1 \rangle$. What is the image of vertex $B$?