The Fact That Jupiter's Radius Is Contracting at a Rate

The fact that Jupiter's radius is contracting at a rate of 1 mm/year results in:

A) differential convection that powers Jupiter's Great Red Spot
B) Jupiter's rotation rate slowing down with time
C) Jupiter's shape being less oblate
D) Jupiter radiating more heat than it receives from the Sun
E) Jupiter's orbit around the Sun getting smaller