What Is the Major Detraction from Using Bituminous Coal as an Energy

Multiple Choice

What is the major detraction from using bituminous coal as an energy source?

A) It has a very low carbon content.
B) It contains a high amount of sulfur, which when burned contributes to acid rain.
C) It has an extremely high surface area which makes it difficult to burn.
D) Bituminous coal is noncrystalline, which gives it a low energy/gram ratio.
E) There are no detractions from using bituminous coal.