If the Temperature of the Earth Cools, How Does the Carbon

If the temperature of the Earth cools, how does the carbon dioxide cycle respond?

A) it increases the rate of volcanic eruptions, thus increasing the rate of carbon dioxide production
B) it slows the formation of carbonate minerals in the oceans, thus pulling less carbon dioxide out of the atmosphere
C) it speeds up the formation of carbonate minerals in the oceans, thus pulling more carbon dioxide out of the atmosphere
D) it reduces the rate of volcanic eruptions, thus reducing the rate of carbon dioxide production