The Formation of Oil Shale Deposits,coals,and Limestones Has What Overall

The formation of oil shale deposits,coals,and limestones has what overall effect on CO₂ in the Earth's atmosphere?

A) increases the total CO₂ in the atmosphere
B) decreases the total CO₂ in the atmosphere
C) either increases or decreases it, depending upon the depositional environment and diagenetic processes
D) The formation of oil shale deposits, coals, and limestones has very little effect.