__________, it wont’ be the only factor concerning your happiness.

A. As the result of the exam might be important

B. As important the result of the exam might be

C Important as might the result of the exam be

D. Important as the result of the exam might be

汽车的平均燃料消耗量是指汽车在平坦公路上行驶时的（）燃料消耗量。