What is curl of the vector field $2x^2y \textbf{i} + 5z^2 \textbf{j} – 4yz \textbf{k}$?
1. $6z \textbf{i} + 4x \textbf{j} – 2x^2 \textbf{k}$
2. $6z \textbf{i} - 8xy \textbf{j} + 2x^2 y\textbf{k}$
3. $- 14 z \textbf{i} + 6y \textbf{j} + 2x^2 \textbf{k}$
4. $-14z \textbf{i} – 2x^2 \textbf{k}$