In a study on mate choice, men and women were able to spend "mate dollars" on traits they desired in a life partner. With a limited budget, women spent 17% of their money on yearly income, compared to only 3% spent by men on the same trait. Thus, women seem to prefer men that can provide direct, material benefits. Which hypothesis for this preference is based on group-selection theory?

A) A wealthy man can provide assistance for her relatives and their offspring, thereby providing an indirect fitness benefit.
B) A man's wealth is indicative of his intelligence, and therefore he will likely produce offspring that are also intelligent.
C) A wealthy man can provide more parental care and resources to care for his offspring.
D) A wealthy man benefits his or her society by providing assistance to individuals otherwise likely to be a burden to the group.