Formula of Normality is

Question

$\begin{array}{1 1} W_A \times 1000 / WF_A \times V_s (in\; cc) \\ W_A \times 1000 / M_A \times V_s (in\; cc) \\ W_A \times 1000 / Cu W_A \times V_s (in \;cc) \\ None\;of\;these \end{array}$