Which examples are compound sentences? Select three options.

a. Maria and Ara are going on an exchange program to China and Japan next summer to study Asian culture.
b. The French drink strong black coffee mixed with hot milk; the Italians drink small cups of espresso.
c. According to my Spanish teacher, Basques have a unique culture, and their language is unrelated to any other world language.
d. My aunt and uncle love to travel in their camper, and they can stop wherever they want to.
e. In history class, we’re studying the causes of the Great Depression, which affected the economy of almost every country in the world.