Which of the Following Does Corvino Take to Be a Problematic

Which of the following does Corvino take to be a problematic "hidden assumption" of harm arguments against homosexuality?

A) If a practice is riskier than the alternatives, then that practice is moral, prudent, or otherwise to be pursued.
B) If a practice is risker than the alternatives, then that practice is immoral, imprudent, or otherwise to be avoided.
C) If a practice is safer than the alternatives, then that practice is immoral, imprudent, or otherwise to be avoided.
D) none of the above