What is the attitude of the author towards the Type A behavior

A．How to prevent people from heart disease.
B．How to deal with stressful conditions.
C．Relaxation is good for our health.
D．Behavioral patterns and healthy problems.

A．Subjects are supposed to modify the perception of stress and their reaction to it.
B．Subjects are supposed to relax themselves in stressful conditions.
C．Subjects are supposed to learn to slow down physical activity.
D．Subjects are supposed to adopt new hobbies that are separate from their careers.