Admissions to University Health Services Sometimes Double or Triple Prior

Multiple Choice

Admissions to university health services sometimes double or triple prior to midterm and final exams.This may occur because

A) illness is an excellent excuse for failing to meet one's obligations.
B) symptoms of stress are misidentified as illness.
C) students are run down from efforts at studying, and, thus, are more vulnerable to common disorders.
D) All of these.