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
Arecanut chewing is aetiological factor in 
Select and explain. 
A. Leukoedema, B. Oral submucous fibrosis, C. Erythema multiforme, D. Oral lichen planus
B: Oral submucous fibrosis
Answer: B: Oral submucous fibrosis 
Explanation: None