This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Medicine
All of the following are X-linked except: 
Select and explain. 
A. G-6 PD deficiency, B. Hemophilia -A, C. Von Willebrandt's disease, D. Fragile X syndrome
C: Von Willebrandt's disease
Answer: C: Von Willebrandt's disease 
Explanation: Answer is C (Von Willebrand disease) : Von Willebrand disease is inherited as autosomal dominant disorder. It is not X-linked.