What Are Two Main Causes of Tsunami

Multiple Choice

What are two main causes of tsunami?

A) volcano flank collapse and sudden degassing of the mantle from a mid-oceanic ridge
B) sudden changes in ocean-floor lithosphere velocity and major rockfall into the ocean
C) asteroid impact into the ocean and collapse of a mid-oceanic ridge
D) subduction-zone earthquakes and transform-fault earthquakes
E) subduction-zone earthquakes and landslide into the ocean