The velocity field in a flow system is given by $v=2\textbf{i}+(x+y) \textbf{j} + (xyz) \textbf{k}$. The acceleration of the fluid at $(1,1,2)$ is
- $2 \textbf{i}+ 10 \textbf{k}$
- $4 \textbf{i}+ 12 \textbf{k}$
- $ \textbf{j}+ \textbf{k}$
- $4 \textbf{j}+ 10 \textbf{k}$