In the Mexican-American War, the Mexican Armies

In the Mexican-American War, the Mexican armies

A) collapsed instantly in the face of a massive American offensive.
B) were able to hold off the American advance for nine months because they had four times as many troops as the Americans.
C) fought bravely and stubbornly, but unsuccessfully.
D) after being reinforced by French troops, were slaughtered at the Battle of Chapultepec.
E) offered little resistance, because most Mexican soldiers were hired mercenaries.