Which statement best evaluates the reasoning in this excerpt from "argument"?

if you argue for reputation, this makes your victory the easier; he is certainly, in all respects, an object of your pity rather than of your anger; and if he cannot comprehend your reasoning, you ought to nature for having given you so much the clearer understanding.

a. the reasoning is not sound; the author relies on overgeneralization.

b. the reasoning is not sound; the author uses an either-or argument.

c. the reasoning is sound; the author's argument is logical.

d. the reasoning is sound; the author uses facts.