Explain Singer’s goal in this article

Please read the article “Famine, Affluence, and Morality,” by Peter Singer and complete the following tasks:
a.Explain Singer’s goal in this article, and then present Singer’s argument that supports his position.
b.Explain three counter-arguments to Singer’s position that he addresses in the article, and then summarize Singer’s responses to those counter-arguments.
c.Define Singer’s concept of marginal utility, and explain how this concept relates to his argument.