Why Were the 1985 Earthquakes in Mexico City a Watershed

Why were the 1985 earthquakes in Mexico City a watershed in Mexican politics?

A) Groups learned that they could solve their problems better without government than with it.
B) Armed militias who challenged the legitimacy of the government emerged.
C) The swift and efficient response of the government reinforced the legitimacy of the PRI.
D) The massive relief efforts of the United States helped to ease the tensions between the two states.
E) All of the above statements are true.