Question: A 60-year-old man has had painful skin with exfoliation of the skin and mucous membranes for 1 day. He has been taking allopurinol and probenecid for 2 weeks because of gouty arthritis. There is diffuse exfoliation of the skin with oozing of serous fluid. The mucous membranes of the mouth are erythematous and exfoliated. There are no target lesions. Which of the following is the most likely diagnosis?
A: Erythema multiforme
B: Pemphigus erythematosus
C: Staphylococcal scalded-skin syndrome
D: Toxic epidermal necrolysis
Please eliminate two incorrect options first, then think it step by step and choose the most proper one option.