问题详情

According to the result published in 1970s by the two pioneering cardiologists _______.
A．Type A people are impatient driven and easily moved to hostility and anger
B．Type A"s are at much higher risk of suffering a heart attack
C．Type A usually shows cardiac risk factors
D．The driving force behind hostility is a cynical mistrust请帮忙给出正确答案和分析，谢谢！