Physicians from the Community Physician's Clinic would like to demonstrate to the Community Hospital administration that additional exam rooms are needed to accommodate their patients. They ask the HIM manager to construct a graph showing the number of patients seen in the last year by the clinic physicians. The categories they wish to have displayed are Primary Care, 5,736; Medical Specialties, 2,473; Surgical Specialties, 2,022; and Hospital Outpatients, 984.

Which type of graph would be appropriate?

a. Line graph

b. Bar graph

c. Pie chart

d. Scattergram