Antibiotic-Resistant Strains of Bacteria Tend to First Be Found in Hospitals.Which

Antibiotic-resistant strains of bacteria tend to first be found in hospitals.Which factor explains why this is the case?

A) A hospital has more bacteria than would be found in other places.
B) Sick people are more likely to provide an environment where resistant strains are favored.
C) Bacteria cannot survive as successfully in areas outside of hospitals.
D) Antibiotics are more likely to be present in hospitals,thus selecting for resistant strains.
E) Bacteria can reproduce more easily in a hospital environment than in other places.