This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Blood, Subject name: Pathology
[{'content': "Increased PT and Normal PTT are found in? \nSelect and explain. \nA. Von Willibrand's disease, B. Factor 7 deficiency, C. Factor 8 deficiency, D. Thrombin deficiency", 'role': 'user'}, {'content': 'Answer: B \nExplanation: ANSWER: (B) Factor 7 deficiencyREF: Mastery of Surgery by Josef E. Fischer, K. L Bland, 5th edition Part I page 90, Saint-Frances guide: clinical clerkship in outpatient medicine Page 434 8; 235See APPENDIX-50 for "BLEEDING/COAGULATION DISORDERS" and APPROACH TO A PATIENT WITH BLEEDING DISORDER"The prothrombin time (PT) is prolonged in factor VII (FVII) deficiency and the international normalized ratio (INR) is elevated. The activated partial thromboplastin time (aPTT) is within the reference range in isolated factor VII deficiency"', 'role': 'assistant'}]