The Effect of Tidal Forces Caused by Triton on Neptune

Multiple Choice

The effect of tidal forces caused by Triton on Neptune as it moves in its retrograde orbit will lead to Triton:

A) spiraling outward from Neptune and eventual escape.
B) spiraling in toward Neptune to eventual destruction by differential tidal forces on the moon.
C) being captured by Pluto when next this planet passes inside the orbit of Neptune.
D) gradually moving from its elliptical orbit toward a perfectly circular orbit.