Why would a businessperson from a limited geographic area, such as Thailand, benefit from learning English as a second language?

A$.$ English$-$speaking countries account for more than $90$ percent of the world's industrial production.

B$.$ English has become the "international language of business."

C$.$ Almost all people from fast$-$growing, third$-$world markets speak English as a first language.

D$.$ Almost all people from highly industrialized European markets speak English as a first language.

E$.$ Thai speakers need to understand American movies so they can relate to their Chinese customers.