Angiotensin-Converting Enzyme (ACE) Drugs Were Studied in the Prevention of Cardiac

Angiotensin-converting enzyme (ACE) drugs were studied in the prevention of cardiac events in diabetic individuals. During a 5-year follow-up period, 120 of 400 diabetic individuals who had taken an ACE inhibitor suffered an acute coronary event. During the same time period, 100 of 300 diabetic individuals who did not use an ACE inhibitor suffered a cardiac incident. What was the risk of suffering a cardiac incident in diabetes individuals on ACE inhibitors versus diabetic patients not taking ACE inhibitors?

A) (120x100) /(280x200)
B) (120x200) /(100x280)
C) (120x280) /(100x200)
D) (120/220) /(280/480)
E) (120/400) /(100/300)