Mercury Is Unique Among the Inner Planets in Having

Multiple Choice

Mercury is unique among the inner planets in having

A) one hemisphere with many craters and few volcanoes and the other hemisphere with few craters and many volcanoes.
B) extensive volcanic activity and crustal deformation over most of its history but no evidence of plate tectonics.
C) no evidence of an iron core.
D) an iron core that occupies almost half its volume.