This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Kidney, Subject name: Pathology
Adult polycystic kidney disease is 
Select and explain. 
A. Autosomal recessive, B. Autosomal dominant, C. X-linked recessive, D. X-linked dominant
B: Autosomal dominant
Answer: B: Autosomal dominant 
Explanation: Ref: Robbins Pathology, 9th ed. pg. 946* ADPKD is autosomal dominant--Polycystic kidney disease.* Occurs due to mutation in PKD 1 and PKD 2 gene* MC type of mutation: PKD 1. (80-85%)* Pathological feature: Large multicystic kidney. It also involves commonly:# MC: Liver-Polycystic liver disease (40%)# Heart: Mitral valve prolapse (20-25%)# Brain: Berry aneurysm