According to the passage, what is the relationship between carbon

A. Carbon dioxide, which is trapped in glacial ice, is released when warm temperatures cause the ice melt. 

B. The greenhouse effect, which leads to the warming of the climate, is result of too much carbon stored in the Earth’s crust. 

C. Rain causes carbon dioxide to be washed out of the atmosphere and into the ocean. 

D. An increase in atmospheric carbon dioxide results in the warming of the climate.