If possible,find the sum of the matrices A and B,where $A=\begin{bmatrix}\sqrt 3 & 1\\2 & 3\end{bmatrix},and\; B=\begin{bmatrix}x & y & z\\a & b &6\end{bmatrix}$

Question

$\begin{array}{1 1} Not \;defined \\ \begin{bmatrix}x & y+1 & z+3\\a & b &6\end{bmatrix} \\ \begin{bmatrix}x & y+1 & z+3\\a & b+3 &6\end{bmatrix} \\\begin{bmatrix}x & y+1 & z+3\\a+2 & b+3 &6\end{bmatrix} \end{array}$