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: Pathology
What is the inheritance pattern of von willebrand disease? 
Select and explain. 
A. AR, B. AD, C. XR, D. XD
B: AD
Answer: B: AD 
Explanation: Von willebrand disease is inherited as autosomal dominant disorder
Refer the byte " mendelian Disorder and their Inheritance  pattern"