The number of examination rooms in a medical office depends on the number of physicians who work there and on ____. 

A. how much time each physician spends with a patient
B. how big the office is
C. how many assistants each physician has
D. how many rooms each physician wants
E. each physician's patient load

E. each physician's patient load
The number of exam rooms in a medical office depends on the number of physicians who work there and on each physician's patient load.