Sandino's Guerrilla Struggle Against the U

Sandino's guerrilla struggle against the U.S. Marines and the Nicaraguan National Guard

A) ended in his defeat and surrender.
B) proved that a popular guerrilla army could resist a technologically superior invader.
C) was not inspired by any vision of social and economic change.
D) ended with his acceptance of a U.S. plan calling for a U.S.-supervised election.