Researchers Have Found That Lung Cancer Patients Who Are Optimistic

Researchers have found that lung cancer patients who are optimistic tend to live longer than those with patients with a pessimistic attitude.According to your textbook,what was one suggested reason for the difference in survival rates?

A) Pessimists tended to smoke more.
B) Pessimists may have made poorer choices with respect to their treatment.
C) Optimists had at a better prognosis when first diagnosed
D) Pessimists had a more advanced stage of lung cancer.