There is an outbreak of gastrointestinal disease involving six children at a day care center. The children all have symptoms of fever, watery stool, and vomiting. Recent activities at the center involved playing with animals including kittens, turtles, birds, and hamsters. What types of bacteria are most likely to be observed in the stool?
A) Gram-positive cocci B) Gram-negative cocci C) Gram-positive rods D) Gram-negative rods