Which of the following is true? ASAP

a) Stressfulness is viewed as both the quality of a person and a situation.

Ob) Overly negative or unrealistic interpretations can lead to increases in stress.

Oc) Studies have shown that cognitive styles are not important for positive coping.

d) If an event challenges the basic definition of self then it will be less stressful than if the self-concept were left intact.​