Many Americans are selling their cars and buying new fuel­efficient hybrids.

Other things remaining the same, in the market for used cars, ________ and in the market for hybrids ________.

A. supply increases and the price falls; demand increases and the price rises B. demand decreases and the price rises; supply increases and the price falls C. both demand and supply decrease and the price might rise, fall, or not change; demand increases and the price rises D. demand decreases, supply increases, and the price falls; supply increases and the price falls