Some people believe that Americans are very rich and greedy while others see us in a good way of being healthy and having a good amount of money. Many people from China are amazed at how well fed and healthy Americans are and sometimes using "fat" as a compliment.
The correct answer is A. The audience knows something the character or characters don't.
This is a common literary technique used in plays and goes as way back as writing plays exists. It was pretty common even in ancient Greece.
She fought for segregation and racism