Peter Singer | What Should a Billionaire Give-And What Should

Peter Singer | What Should a Billionaire Give-And What Should You?
Singer explores the ethical issues associated with philanthropy on a large scale, such as the billions of dollars donated by Bill Gates and Warren Buffet, including questions raised concerning motive, obligation, and relation to government aid. He concludes with a hypothetical calculus of distribution for the wealthy to the poor that would more than solve the crisis of poverty among the world's poorest peoples.
-Singer rejects the "fair share" theory of giving because

A) not all parties may step up to the obligation to give.
B) all who are obliged to give will give their fair share.
C) those who owe more may not give more.
D) both a and c