GMAT Sentence Correction (SC) | GMAT prep: Compared to those who do not, running three days

Compared to those who do not, running three days a week saves an average of 14.1 percent on health-care costs each year in the United States.
A. Compared to those who do not, running three days a week saves
B. Compared with nonrunners, people who run three days a week save
C. Compared to not running, those running for three days a week save
D. When compared with those who do not, people running three days a week save
E. When compared to nonrunners, running three days a week saves