Use the following matrices. Determine whether the given expression is defined. If it is defined, express the result as a single matrix; if it is not, say "not defined."
$$
A=\left[\begin{array}{rrr}
0 & 3 & -5 \\
1 & 2 & 6
\end{array}\right] \quad B=\left[\begin{array}{rrr}
4 & 1 & 0 \\
-2 & 3 & -2
\end{array}\right] \quad C=\left[\begin{array}{rr}
4 & 1 \\
6 & 2 \\
-2 & 3
\end{array}\right]
$$
$$
2 A+4 B
$$