How do the jovian planet interiors differ?
A) All have about the same amount of hydrogen and helium but the proportion of rocks is greater in those planets closer to the Sun.
B) All have cores of about the same mass, but differ in the amount of surrounding hydrogen and helium.
C) The composition changes from mostly ammonia in Jupiter and Saturn to mostly methane in Uranus and Neptune.
D) The composition changes from mostly hydrogen in Jupiter and Saturn to mostly helium in Uranus and Neptune.
E) The core mass decreases with the mass of the planet.
B
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