an otherwise healthy 4-year-old boy presents with his parents for vomiting and diarrhea. several kids at his school have had similar symptoms. he began to have nonbloody, nonbilious vomiting yesterday and this morning began to have nonbloody diarrhea. he felt warm at home, but he is currently afebrile. he is well-appearing and playful. he is able to drink water without difficulty. which of the following is the next best step? A
Administer intravenous fluids
B
Admit for observation
C
Provide reassurance and discharge home
D
Send stool cultures
