Which Rule Is Used in the Following Inference $$\begin{array} { l } \mathrm { D } \vee \mathrm { L } \\\frac { \sim \mathrm { D } } { \mathrm { L } }\end{array}$$

Multiple Choice

Which rule is used in the following inference? $$\begin{array} { l } \mathrm { D } \vee \mathrm { L } \\\frac { \sim \mathrm { D } } { \mathrm { L } }\end{array}$$

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