Every Year at Thanksgiving, Than Volunteers to Serve Dinner at the Local

Every year at Thanksgiving, Than volunteers to serve dinner at the local homeless shelter. She explains that it doesn't take a lot of time and the people there are so grateful that it really makes her feel better about herself and puts her name on the volunteer list that appears in the newspaper at the end of the year. Than is probably helping, consistent with the

A) empathy-altruism hypothesis.
B) negative-affect hypothesis.
C) self-serving-altruistic hypothesis.
D) egoistic model of helping.