Which Best Describes the Surface of Triton

Multiple Choice

Which best describes the surface of Triton?

A) old, dark and cratered with a younger surface marked by ovoids
B) dark, dirty ice heavily pocked with craters
C) an icy crust free of craters with a liquid water ocean beneath it
D) an icy surface dominated by frozen nitrogen, methane, carbon monoxide and carbon dioxide
E) an icy surface dominated by frozen methane with a liquid ocean beneath it