While Helping One's Older Relatives Is a Voluntary and Altruistic

While helping one's older relatives is a voluntary and altruistic act, it is also an economic act. This activity is an economic act because

A) the person doing it can expect to be financially rewarded in the form of an inheritance
B) many additional good consequences will no doubt follow that are unanticipated.
C) it may encourage seniors to find a part-time job.
D) it benefits the entire society.
E) both the helper and the senior are engaged in a form of reciprocal exchange.