通常产业中哪项（ ）不必进行重点管理 Which of the following parts in an industry need not be emphasized in a management（ ）

A、产业内部资源消耗最多的行业部门 The industrial sector that consumes the most resources within the industry
B、产业内部污染排放最多的行业部分 The industrial sector that emits the most pollutants within the industry
C、产业内部生态效率最低的生产组分 The component producer with lowest eco-efficiency within the industry
D、产业内部占据经济份额最低的生产组分 The component producer with the lowest economic contribution to the total industry