This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bleeding and Thrombotic Disorders, Subject name: Medicine
[{'content': 'Which of the foliowingmay present with isolated prolongation of prothrombin time (PI> \nSelect and explain. \nA. Factor VIiI deficiency, B. FActor VII deficiency, C. Factor XII deficiency, D. Factor IX deficiency', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Factor VII deficiency o Factor VII deficiency may present with isolated prolongation of prothrombin time.Cause of Isolated prolongation of PT (CMDT)# Vitamin K deficiency# Warfarin therapy# Liver disease# Factor VII deficiency", 'role': 'assistant'}]