Calculate the sum of matrices A=(1234)A = \begin{pmatrix} 1 & 2 \\ 3 & 4 \end{pmatrix}A=(1324) and B=(5678)B = \begin{pmatrix} 5 & 6 \\ 7 & 8 \end{pmatrix}B=(5768).
(681012)\begin{pmatrix} 6 & 8 \\ 10 & 12 \end{pmatrix}(610812)
(5122132)\begin{pmatrix} 5 & 12 \\ 21 & 32 \end{pmatrix}(5211232)
(4444)\begin{pmatrix} 4 & 4 \\ 4 & 4 \end{pmatrix}(4444)
(681011)\begin{pmatrix} 6 & 8 \\ 10 & 11 \end{pmatrix}(610811)