This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bleeding Disorders, Subject name: Pathology
[{'content': 'Prolonged PT and Normal PTT may be seen in: \nSelect and explain. \nA. Thrombocytopenia, B. DIC, C. Vit. K deficiency, D. Aspirin toxicity', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. (c) Vit. K deficiency(Ref: Robbins 9th/pg 656)Disease/ ConditionBTPTapTTA. Thrombocytopenia|NNB. DIC|||C. Vit. K deficiencyN|| (late)D. Aspirin toxicity|NN', 'role': 'assistant'}]