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.