The 1964 Alaska M 9

The 1964 Alaska M 9.2 earthquake was far larger than the 1989 Loma Prieta earthquake at M 6.9,yet the Loma Prieta earthquake was far more costly,even when adjusted for inflation.Why?

A) That area of Alaska is all bedrock whereas San Francisco is all built on loose sediments.
B) The shaking lasted three times as long in San Francisco as it did in Alaska.
C) Most of the shaking motion in San Francisco was vertical while in Alaska, the motion was horizontal.
D) San Francisco is closer to sea level and large portions of the city dropped below sea level suddenly.
E) The population and infrastructure density in Alaska was much lower than in San Francisco.