When the social costs exceed the private costs, economists state that there is

Did Mother Teresa create positive externalities when she helped the poor of Calcutta?

A) No, because the poor continued to exist and her efforts were largely unsuccessful. B) No, because she fully calculated all the benefits of her activities. C) Yes, because her activities have inspired and benefited countless others whom Mother Teresa could not have known about or taken into account. D) Yes, because her activities had nothing to do with the search for economic profit.

The quintile distribution of family income in the United States shows

A) the average incomes of 5-person families grouped by age, sex, race, education, and similar factors. B) the percentage of total family income received by each 5 percent of U.S. families grouped by income. C) the percentage of total income received by each 20 percent of U.S. families grouped by income. D) the percentage of total family income spent on food, clothing, shelter, medical care, and essential services. E) the percentage of total family income stemming respectively from wages, interest, profit, rent, and welfare grants or other transfers.