GWD 21-41

The Environmental Protection Agency’s proposal to place restrictions on both diesel fuel and diesel engines has sparked a counterattack by the oil industry, saying that the move will exacerbate the nation’s fuel supply problems.

A. on both diesel fuel and diesel engines has sparked a counterattack by the oil industry, saying

B. on both diesel fuel and engines have sparked the oil industry to counterattack, and they say

C. on both diesel fuel and diesel engines has sparked a counterattack by the oil industry, which says

D. both on diesel fuel and engines has sparked the oil industry to a counterattack, saying (C)

E. both on diesel fuel and diesel engines have sparked the oil industry to counterattack, and it says

这里的A选项的saying指的是谁saying?

C选项的which指的又是谁?

请NN帮忙

一般规律的话，A的saying的主体名词应是主句中心词，此处是proposal；C的which分

非限制性定语从句一般就近修饰名词，但也有跨越修饰的先例，此处为industry.