This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Surgery
[{'content': 'Regarding appendicitis in children, all are true except? \nSelect and explain. \nA. Localized pain is single most imp reliable sign, B. Vomiting precedes abdominal pain, C. 80% cases perforation ocurs in children < 5 years, D. 60% perforation occurs in 48 hours', 'role': 'user'}, {'content': 'Answer: B \nExplanation: In mesenteric lymphadenitis, the pain is colicky in nature and cervical lymph nodes may be enlarged.The pain is similar; however, signs may be central or left sided. Occasionally, there is a history of antecedent abdominal pain or intermittent lower gastrointestinal bleeding. Ref: Bailey & Love&;s Sho Practice of Surgery,E25,Page-1207', 'role': 'assistant'}]