Segmentation of a Teaching Hospital's Patient Database Would Be

Segmentation of a teaching hospital's patient database would be:

A) Useful in allocating physical resources. II. Helpful in balancing staffing needs. III. Advantageous in the process of applying for additional funding to accommodate projected demands on facilities and staff. IV. Impractical because of the transient nature of the patient base.
B) IV only
C) I and II only
D) III only
E) I, II, and III only