Sentence Correction (SC) | Re: Scientists at Oxford have recently found that animals across the

Scientists at Oxford have recently found that animals across the evolutionary spectrum have a keen sense of quantity,able to distinguish not just bigger from smaller or more from less, but two from four, four from ten, forty from sixty.

A. able to distinguish not just bigger from smaller or more from less, but
B. able to distinguish not just bigger from smaller or more from less, and
C. which are able to distinguish not just bigger from smaller or more from less, but
D. have the ability to distinguish