Perform the Following Matrix Operations If Possible $\left[\begin{array}{rr}5 & -3 \\ 7 & -2 \\ 0 & 4\end{array}\right]\left[\begin{array}{rr}1 & 2 \\ -1 & 6 \\ 3 & 3\end{array}\right]$

Perform the following matrix operations if possible.
(a) $\left[\begin{array}{rr}5 & -3 \\ 7 & -2 \\ 0 & 4\end{array}\right]\left[\begin{array}{rr}1 & 2 \\ -1 & 6 \\ 3 & 3\end{array}\right]$
(b) $\left[\begin{array}{rr}1 & -3 \\ 2 & 0 \\ 4 & -5\end{array}\right]-3\left[\begin{array}{rr}-1 & 4 \\ 3 & 4 \\ 2 & -2\end{array}\right]$
(c) $\left[\begin{array}{rr}2 & 0 \\ -3 & -1 \\ 4 & 6\end{array}\right]\left[\begin{array}{rrr}1 & 2 & 3 \\ -1 & 0 & -2\end{array}\right]$