OG 131 A it 指代

wangjieava23

131. Over 75 percent of the energy produced in France derives from nuclear power, while in Germany it is just over 33 percent.
(A) while in Germany it is just over 33 percent
(B) compared to Germany, which uses just over 33 percent
(C) whereas nuclear power accounts for just over 33 percent of the energy produced in Germany
(D) whereas just over 33 percent of the energy comes from nuclear power in Germany
(E) compared with the energy from nuclear power in Germany, where it is just over 33 percent

OG A While is somewhat ambiguous, since it might indicate simultaneity rather than contrast; the referent of it is ambiguous, raising questions about just what two things are being compared.

请问：A选项的it指代什么？是 the energe produced in France? 我第一次读的时候，直接反应it就是指代这里。所以og的解释我很糊涂。

wangjieava23

现在再想想，似乎还可以被理解为 it = over 75 percent of the energy produced in France.

到底it 是指代核心词，还是指代全部？还是我纠结在错误选项，在错误的道路上越走越远？？