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
Increased PT and Normal PTT are found in? 
Select and explain. 
A. Von Willibrand's disease, B. Factor 7 deficiency, C. Factor 8 deficiency, D. Thrombin deficiency
B: Factor 7 deficiency
Answer: B: Factor 7 deficiency 
Explanation: 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"