Which Rule Is Used in the Following Inference $$\begin{array} { l } A \supset ( D \vee F ) \\( D \vee F ) \supset G \\A \supset G\end{array}$$

Multiple Choice

Which rule is used in the following inference? $$\begin{array} { l } A \supset ( D \vee F ) \\( D \vee F ) \supset G \\A \supset G\end{array}$$

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