GMAT Sentence Correction (SC) | Re: era of modern medicine

It could be argued that the era of modern medicine began in earnest with Louis Pasteur’s 19th-century development of a vaccine forrabies, which led to the eradication of polio, smallpox, and eventually malaria.

(A) rabies, which led to the eradication of polio, smallpox, and eventually
(B) rabies, which led to the eradication of polio and smallpox, and eventually to
(C) rabies, an event that led to the eradication of polio, smallpox, and eventually
(D) rabies and an event leading