Find the determinant of the 4×44 \times 44×4 matrix: M=(4333343333433334)M = \begin{pmatrix} 4 & 3 & 3 & 3 \\ 3 & 4 & 3 & 3 \\ 3 & 3 & 4 & 3 \\ 3 & 3 & 3 & 4 \end{pmatrix}M=4333343333433334
13
16
7
4