A Psychology Student Studies the "Wedding Ring" Effect,the Idea That

Multiple Choice

A psychology student studies the "wedding ring" effect,the idea that people who are already in a committed relationship seem to be more attractive to opposite-sex singles.Using the ideas in sexual strategy,why might this be so?

A) A person in a committed relationship must only want a sexual encounter,making them a good short-term partner and that is what both men and women desire.
B) A person in a committed relationship must have the qualities of a good long-term partner and that is what both men and women desire.
C) A man in a committed relationship would not be available,making him attractive to single women who generally desire a long-term partner only.
D) A woman in a committed relationship would not be available,making her attractive to single men who generally desire a short-term partner only.