Which of the sentences below best expresses the essential information in the highlighted sentence in the passage? Incorrect choices change the meaning in important ways or leave out essential information. A. Higher temperatures and pressures promote sedimentation, which is responsible for petroleum formation. B. Deposits of sediments on top of organic matter increase the temperature of and pressure on the matter. C. Increase pressure and heat from the weight of the sediment turn the organic remains into petroleum. D. The remains of microscopic organisms transform into petroleum once they are buried under mud.