?H ? ?B $\frac { \mathrm { K } \supset \sim \mathrm { H } } { \mathrm { K } \supset \sim \mathrm { B } }$

?H ? ?B $\frac { \mathrm { K } \supset \sim \mathrm { H } } { \mathrm { K } \supset \sim \mathrm { B } }$

A) Denying the antecedent.
B) Invalid.
C) Pure hypothetical syllogism.
D) Constructive dilemma.
E) Destructive dilemma.