Why Does the Atmosphere of Saturn Appear to Have Only

Multiple Choice

Why does the atmosphere of Saturn appear to have only half the helium content of Jupiter?

A) Because Saturn is so much colder, helium does not show up as strongly in its spectrum.
B) Saturn was formed farther from the helium rich Sun.
C) A red dwarf, Jupiter has fused some of its hydrogen into helium, whereas Saturn, a colderplanet, has not.
D) Much of Saturn's helium has differentiated towards its center.
E) Much of Saturn's helium has reacted with water and formed helium oxide.