What does (its) refer to?

In a sentence like: America is a rich country. Its resources are massive. If the question was: what does (its) refer to? And there were choices to choose from: A. America B. America's

Which one is the correct answer? A or B ??

Thank you


Assuming the question is very particular about its, then I would say that the real answer is America's, option B. This is because it refers the America, but its refers to the resources of America.