GWD-10-Q2关于代词的疑问

gamxiaoyuan

Marconi's conception of the radio was as a substitute for the telephone, a tool for private conversation; instead, it is precisely the opposite, a tool for communicating with a large, public audience.
A. Marconi's conception of the radio was as a substitute for the telephone, a tool for private conversation; instead, it is
B. Marconi conceived of the radio as a substitute for the telephone, a tool for private conversation, but which is
C. Marconi conceived of the radio as a tool for private conversation that could substitute for the telephone; instead, it has become
D. Marconi conceived of the radio to be a tool for private conversation, a substitute for the telephone, which has become
E. Marconi conceived of the radio to be a substitute for the telephone, a tool for private conversation, other than what it is,
我想问：C的it为什么能指代radio呢？我一直认为，分句句首的代词优先指代主句主语，如果不能指代主语，应该指代最近的名词，难道这个原则不对？

gamxiaoyuan

没人来帮帮忙么？

myancamel

顶一下，同样的疑问

Mrfish

UP, 同问！

Mrfish

难道是因为前面有个分号?