In the Western Collaborative Group Study, After Traditional Risk Factors

In the Western Collaborative Group Study, after traditional risk factors were controlled for, Type A subjects

A) were twice as likely to develop coronary heart disease (CHD) as other subjects.
B) had only a slightly increased risk for developing CHD.
C) were actually less likely to develop CHD than other subjects.
D) were more likely to develop CHD only if they also had a parental history of heart attacks.