Which One of the Following Statements Has Been Proven to Be

Which one of the following statements has been proven to be true?

A) Recent research has found that women do not have a unique physiologic response to stress.
B) Both men and women interpret the same stressor in the same manner without regard to past experiences.
C) Stress influences the immune system in one complex manner.
D) Stressors that are identical do not necessarily have similar effects on each individual.