This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nutrition, Subject name: Pediatrics
[{'content': 'A 3 year old girl with severe dehydration. What is the best step in case of failure to obtain IV access ____________ \nSelect and explain. \nA. Subclan central line, B. Introsseous, C. Jugular cut down, D. Femoral vein', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Increased fluids and dietary changes are the main treatment for diarrhea. Note: One loose stool can mean nothing. Don&;t sta dietary changes until your child has had several loose stools. Encourage your child to drink lots of fluids to prevent dehydration. Reference: GHAI Essential pediatrics, 8th edition Nutrition Chapter', 'role': 'assistant'}]