<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 52-year-old woman presents with erosions in her mouth that are persistent and painful. She says that symptoms appeared gradually 1 week ago and have progressively worsened. She also notes that, several days ago, flaccid blisters appeared on her skin, which almost immediately transformed to erosions as well. Which of the following is the most likely diagnosis?? A: Pemphigus vulgaris, B: Psoriasis, C: Bullous pemphigoid, D: Molluscum contagiosum, E: Staphylococcal infection scalded skin syndrome,  <response>: Based on the description, this patient has erosions in her mouth and flaccid blisters on her skin that rapidly transform into erosions. This presentation is most consistent with pemphigus vulgaris, an autoimmune blistering disease that affects the skin and mucous membranes. The lesions start as flaccid blisters and quickly rupture, leaving painful erosions. Pemphigus vulgaris typically occurs in middle-aged and older adults. The other options can be ruled out: psoriasis does not cause blisters, bullous pemphigoid presents with tense blisters rather than flaccid ones, molluscum contagiosum causes umbilicated papules rather than blisterserosions, and staphylococcal scalded skin syndrome manifests with blisters that rupture easily but does not typically affect the oral mucosa.A: Pemphigus vulgaris 