Identification of the Causative Microbe for a Diarrheal Infection Often

Identification of the causative microbe for a diarrheal infection often requires a stool culture. The best medium for this purpose is _______.

A) a liquid medium, as the diarrhea conditions are more liquid than solid
B) a general purpose medium that supports the growth of the diverse gut microbiota
C) a medium containing bile as a selective agent
D) a medium containing a broad-spectrum antibiotic as a selective agent
E) a medium containing mammalian blood to provide extra growth factors