Which Rule Is Used in the Following Inference A)HS
B)MP
C)MT
D)CD
E)DD

Which rule is used in the following inference? $$\begin{array} { l } \sim [ \mathrm { E } \vee ( \mathrm { B } \cdot \mathrm { C } ) ] \supset \sim ( \mathrm { F } \vee \sim \mathrm { G } ) \\\sim ( \mathrm { F } \vee \sim \mathrm { G } ) \supset [ \mathrm { H } \equiv ( \mathrm { F } \cdot \mathrm { G } ) ] \\\sim [ \mathrm { E } \vee ( \mathrm { B } \cdot \mathrm { C } ) ] \supset [ \mathrm { H } \equiv ( \mathrm { F } \cdot \mathrm { G } ) ]\end{array}$$

A) HS
B) MP
C) MT
D) CD
E) DD