Which of the Following Statements Concerning the Link Between Stress

Which of the following statements concerning the link between stress and illness is true ?

A) Stress can increase vulnerability to short-term illnesses, like colds, but does not affect the course of more serious long-term diseases such as cancer.
B) Stress can influence whether or not a person contracts a particular illness, but not the duration or outcome of that illness.
C) Stress increases susceptibility to coronary heart disease and cancer, but not colds and other minor infections.
D) Stress can influence both short-term and long-term illnesses, including colds, coronary heart disease, and cancer.