Why Does Titan Have Such a Nitrogen-Rich Atmosphere

Multiple Choice

Why does Titan have such a nitrogen-rich atmosphere?

A) It was formed that way in the solar nebula.
B) The nitrogen comes from the breakup of ammonia (NH₃) by solar radiation and subsequent thermal escape of the hydrogen.
C) The nitrogen was formed from the chemical reaction of sulphuric acid with surface rocks.
D) Through the impact of nitrogen rich comets during the early solar system.
E) The nitrogen was created through a chain of fusion reactions in Titan's core.