If the allegations of C hold any merit, then that one is the creepiest. At least no one is harmed in A or B, not in any physically or emotionally damaging ways. Thinking someone is hot and doing nothing, or touching people in unintentionally awkward yet benign ways, are not things that should ever be equated to rape and the more severe forms of sexual assault.
Though, if the rhetoric against C is false, then it's A. Being cognizant that your daughter is your type and admitting it to the public is rather creepy, even if the incest-factor kills the attraction.