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: Unknown
Which of the following shows deposition of IgA in dermal papilla - 
Select and explain. 
A. Dermatitis herpetiformis, B. IgA papillomatosis of childhood, C. Bullous pemphigoid, D. Gestational herpes
A: Dermatitis herpetiformis
Answer: A: Dermatitis herpetiformis 
Explanation: Ans. is 'a' i.e., Dermatitis herpetiformis Immunopathological appearance of vesicobullous disorders* Bullous pemphigoid-Linear band of IgG or C3 in epidermal basement membrane* Pemphigus vulgaris-Cell surface deposits of IgG on keratinocytes* Pemphigus foliaceous-Cell surface deposits of IgG on keratinocytes* Pemphigoid gestationis-Linear band of C3 in epidermal basement membrane zone* Dermatitis herpetiformis-Granular deposits of IgA in dermal papillae* Chronic bullous disease of childhood-IgA deposits along the dermoepidermal junction* Linear IgA dermatosis of adults-Linear deposits of IgA at dermoepidermal junction