I.   Whether each rule corresponds to a rule of inference, and which
            rule of inference for each that does correspond.

           A.   Modus Tollens

           B.   Simplification

           C.   No rule.  The argument is invalid.

           D.   No rule, but the conclusion can be derived from the
                premiss.  More on that later.

           E.   Hypothetical Syllogism

           F.   Constructive Dilemma