The Key Premise in Peter Singer's Argument for Aiding the World's

The key premise in Peter Singer's argument for aiding the world's needy is

A) "[I]f it is in our power to equally distribute goods throughout the world to all persons,we ought, morally, to do it."
B) "We-the well-to-do-have no right at all to the goods we possess; we acquired them mostly through accidents of birth and geography."
C) "Giving food and shelter to the poor would only make their plight worse."
D) "[I]f it is in our power to prevent something bad from happening, without thereby sacrificing anything of comparable moral importance, we ought, morally, to do it."