This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pathology
[{'content': 'Reverse smoking is common in: \nSelect and explain. \nA. Maharashtra, B. Gujarat, C. Andhra Pradesh, D. Rajasthan', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Reverse chutta (crude form of cigar) smoking, practised especially among females of Srikakulam district of Andhra Pradesh, recorded a prevalence of 8.8% of leukoplakia, 4.6% preleukoplakia and 17.9% leukokeratosis nicotina palati (Daftary et al, 1992).\nPalatal involvement was noted in 85% of the leukoplakia cases and in 57% of the preleukoplakias, and, of course, in all of the cases of Ieukokeratosis nicotina palati. Palatal changes associated with reverse smoking thus exhibited a spectrum of clinical changes, and it was not satisfactory to group them under leukoplakia, preleukoplakia or leukokeratosis nicotina palati.\nReference:\xa0Shafer’s Textbook of ORAL PATHOLOGY Eighth Edition page no 145', 'role': 'assistant'}]