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
A 3-year-old patient has extensive vesicles on lip,tongue, oral mucous membrane. After 2-4 days vesicles rupture at followed by pseudomembrane formation and also some dermal lesions seen what will be the diagnosis 
Select and explain. 
A. Herpetic stomatitis, B. EM, C. ANUG, D. Steven-Johnson syndrome
B: EM
Answer: B: EM 
Explanation: Option 'D' steven-johnson syndrome is characterized by oral, genital and ocular Lesions.
Option 'A' herpetic gingivostomatitis usually occurs in children and young adults.
Option 'C' though pseudomembrane formation is seen in ANUG, no dermal Lesions are seen.