This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Communicable diseases, Subject name: Social & Preventive Medicine
[{'content': 'Exacerbation of lesions in patients of borderline leprosy is seen in - \nSelect and explain. \nA. ENL (erythema nodosum leprosum), B. Lepra reaction type I, C. Jarisch-Herheimer reaction, D. Resolving leprosy', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Type 1 or reversal reaction occurs in paucibacillary or multibacillary cases in unstable types like BT,BB,BL ENL is seen only in MB cases like BL and LL type only Reference; Park&;s Textbook of preventive and social medicine, 24th edition.Pg no. 342', 'role': 'assistant'}]