What should your first action be when treating an electric burn?

Question

$\begin{array}{1 1} (a)\; \text{Ensure that the casualty is still breathing } \\ (b)\; \text{Wash the burn with cold water} \\ (c)\; \text{Check for danger and ensure that contact with the electrical source is broken} \\ (d)\; \text{Check for level of response} \end{array}$