This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Papulosquamous Disorders, Subject name: Skin
A lady with bilateral buccal reticulate white streaks. Pain increases on intake of spicy food and patient gives no H/O tobacco but show amalgam on 3rd molar. Diagnosis? 
Select and explain. 
A. Leukoplakia, B. Lichen planus, C. Aphthous stomatitis, D. Candidiasis
B: Lichen planus
Answer: B: Lichen planus 
Explanation: Ans. b. Lichen planusWhite reticulate pattern is commonly seen associated with lichen planus. History of amalgam filling in teeth is also suggestive of lichen planus.