This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Psoriasis, Subject name: Skin
[{'content': 'Which of the following is most serious type of psoriasis is - \nSelect and explain. \nA. Chronic plaque psoriasis, B. Generalized pustular psoriasis, C. Guttate psoriasis, D. Flexural psoriasis', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans is 'b' i.e. Generalized pustular psoriasis o Erytherodermic and generalized pustular psoriasis (Von Zumbusch type) are can become dermatological emergencies. They are the most severe forms.o Chronic plaque psoriasis is the most common form (80%).", 'role': 'assistant'}]