以下（ ）指标随年份的变化最适合用于全球变暖环境管理 The annual change of ( ) is the most suitable metric for global warming management

A、温室气体排放量,以CO2当量/年计算 GHGs emissions, represented as CO2 equivalent per year
B、二氧化碳排放量,以CO2当量/年计算 Carbon dioxide emissions, represented as CO2 equivalent per year
C、能源消耗量,以标准煤/年计算 Energy consumption, represented as tons of standard coal per year
D、能源效率,以万元/吨标准煤能耗计算 Energy efficiency, represented as the economic output in ten thousand yuan per ton of energy consumption in standard coal