Sentence Correction (SC) | Re: Antarctica receives more solar radiation than does any other place on

I think there is another version of this question with the option B saying 'were it not to do so' rather than 'were it to do so' is that the correct version? I am really trying to make B make sense in my head but somehow I am still at lost at how 'were it to do so' fits here. If anyone could help!

Antarctica receives more solar radiation than does any other place on Earth, yet the temperatures are so cold and the ice capis so reflective that little of the polar ice melts during the summer; were it to do so,