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
Which of the following is an autosomal dominant metabolic disorder- 
Select and explain. 
A. Cystic fibrosis, B. Phenylketonuria, C. Alpha-I anti-trypsin deficiency, D. Familial hypercholesterolemia
D: Familial hypercholesterolemia
Answer: D: Familial hypercholesterolemia 
Explanation: Ans. is 'd' i.e., Familial hypercholesterolemia