GMAT Sentence Correction (SC) | Re: Calculus, a subject offered to high school students planning

I would not rather subscribe to the OE. First, I do not think that A is that bad. It still makes a lot of sense to take China's as the referent for the pronoun 'its', both logically and structurally.

I would think that C contains an incomplete thought in that it is not making clear categorically whose interest is waning. It could be China's or it could be any other country's. The intended meaning is simply dangling as far as I see. C may be structurally ok but logically aberrant.


Probably,
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