Sentence Correction (SC) | Re: Like any star of similar mass would do, once the Sun has

Hi

I am little confuse here on subject verb agreement, If any body can help that would be great.

In Option D-
D. As any star of similar mass would, once the hydrogen in the Sun’s core is exhausted it will expand into a red giant and will eventually eject

Somewhere it is written thatIt is pointing to Sun's core but I think it should point to Hydrogen, because hydrogen is subject here. (I know meaning will be absurd but am going through some grammar)

In option E

E. As would be the
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