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: Pediatrics
True about Alpha1 antitrypsin deficiency is? 
Select and explain. 
A. Deficiency of protease inhibitor, B. Autosomal recessive, C. May cause cholestatic jaundice, D. All of the above
D: All of the above
Answer: D: All of the above 
Explanation: (255) All of the above REF: Robbin's 7th ed p. 913 Alpha 1 antitrypsin deficiency: Due to protease inhibitor deficiency Increased neutrophill elastase Neonatal cholestasis may occur, Hepatocellular carcinoma may also develop Pulmonary disease may occur in form of emphysema Gene located on chromosome 14