Two Events That Were Most Effective in Bringing About Licensure

Two events that were most effective in bringing about licensure of physicians were

A) increases in the number of hospitals and development of effective anesthesia.
B) influx of foreign physicians and increase in medical school enrollees.
C) development of effective anesthesia and antiseptics.
D) increases in demand for physicians and increases in the number of nurses.
E) increases in sepsis and increases in the number of physician assistants.