The CARDIA (Coronary Artery Risk Development in Adulthood) Study Began

The CARDIA (Coronary Artery Risk Development in Adulthood) study began with thousands of healthy 18- to 30-year-olds; many were reexamined 7 to 20 years later. The study found that _____.

A) those who were the most fit at the first assessment were four times more likely to have diabetes and high blood pressure in middle age.
B) those who were the least fit at the first assessment were four times more likely to have diabetes and high blood pressure in middle age.
C) those who were the least and most fit at the first assessment were four times more likely to have diabetes and high blood pressure in middle age.
D) there was no relation between fitness level at the first assessment and later health conditions.