Pediatrics Von willebrands disease all are true except – a) Factor VIII C deficiencyb) B.T. Prolongedc) Normal Ristocetin testd) Defective aggregation A a B bc C ac D b 💡 Explanation Von willebrands disease all are true except – a) Factor VIII C deficiencyb) B.T. Prolongedc) Normal Ristocetin testd) Defective aggregation ✓ Correct Answer: C. ac