**Bоnus Questiоn*** 2 Extrа Credit Pоint A 20 yeаr old pаtient bled profusely following a tooth extraction. She had a history of sporadically increased menstrual bleeding and nose bleeds. The laboratory test showed: Platelet count of 350,000 PT of 12 seconds aPTT of 125 seconds Factor VII activity of 20% Factor IX activity levels of 120% Platelet aggregation studies- normal ADP, collagen and decreased with Ristocetin. What is the most likely cause of this patients bleeding episodes?