Which Rule Is Used in the Following Inference $\begin{array} { l } ( D \vee E ) \cdot F \\\underline { G } \\{ [ ( D \vee E ) \cdot F ] \cdot G }\end{array}$

Multiple Choice

Which rule is used in the following inference? $\begin{array} { l } ( D \vee E ) \cdot F \\\underline { G } \\{ [ ( D \vee E ) \cdot F ] \cdot G }\end{array}$

A) Simp
B) Conj
C) Add
D) DS
E) HS