Select the Fallacy or Bad Argument Technique Which Occurs in the Following

Multiple Choice

Select the fallacy or bad argument technique which occurs in the following argument: Richie McCaw is a great sportsman. When he says Heatorama heat pumps are the best, he must know what he's talking about.

A) Appeal to authority
B) Epistemic fallacy
C) Ad hominem
D) Fallacy of denying the consequent