Which sentence best expresses the passage’s main idea? The cattle-herding cowboy is one of the most important icons of American culture. The earliest American cowboys were Mexican cowboys called vaqueros. The Mexican vaqueros were from a part of Mexico ruled by Spain. They developed their riding style from the Spanish tradition of horse riding known as doma vaquera.

A.
American cowboys have their roots in Spanish riding styles.
B.
Cowboys are known as American cultural icons around the world.
C.
Doma vaquera is a Spanish riding method used for cattle herding.
D.
Mexican vaqueros followed the Spanish riding method.