If One Were to Observe Neptune a Quarter of a Billion

Multiple Choice

If one were to observe Neptune a quarter of a billion years in the future, what significant change would be seen?

A) The planet would have shrunk considerably as gravity continues to compress it.
B) Triton would be gone and the ring system would be considerably enhanced.
C) Triton's retrograde orbit would have become prograde.
D) The rings will have disappeared.