When Io Passes Between Jupiter and Europa,both Moons Experience Gravitational

Multiple Choice

When Io passes between Jupiter and Europa,both moons experience gravitational stress.On Europa,this gravitational stress is responsible for some of the characteristic features of the moon.Which feature does NOT occur as a result of the gravitational flexing of Europa?

A) cracks on the surface
B) heat to keep subsurface water liquid
C) water geysers
D) lava/sulfur volcanoes