This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Disorders of Gastrointestinal System Including Diarrhea, Subject name: Pediatrics
A 4-month-old child has 10 episodes of vomiting and 2-3 episodes of loose stools and crying since the last 24 hours. Best line of management will be: 
Select and explain. 
A. Intravenous fluids, B. ORS, C. Breastfeeding only, D. Antibiotics
A: Intravenous fluids
Answer: A: Intravenous fluids 
Explanation: Risks associated with severe dehydration that necessitate intravenous resuscitation include: age <6 mo; prematurity chronic illness high fever bloody diarrhea; persistent emesis poor urine output; sunken eyes and a depressed level of consciousness. In this case, as the child is < 6 months old and is having persistent emesis, intravenous fluid is indicated.