Why are large magnitude earthquakes generally associated convergent boundaries instead of divergent boundaries?

Why are large magnitude earthquakes generally associated convergent boundaries instead of divergent boundaries? 

a.Rocks are stronger under compression than under tension and can store more elastic energy.

b.Rocks are stronger under tension than under compression and can store more elastic energy

c.Rocks are stronger under shear forces than under compression and can store more elastic energy.

d.The rocks are subject to shear forces and are harder to rupture.