Decide whether a matrix product is defined and give its order
Two matrices \(D\) and \(C\) are given below
\[D = \begin{bmatrix} -3 & 6 \\ 0 & -5 \\ 6 & -8 \\ 5 & -8 \end{bmatrix}\]
\[C = \begin{bmatrix} 7 & 5 \\ -2 & 2 \\ -3 & -1 \\ 3 & 0 \end{bmatrix}\]