This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Urinary tract, Subject name: Pediatrics
Bater syndrome is mutation in 
Select and explain. 
A. Na-k-cl co transpoer, B. Na-Cl channel, C. Renin, D. ENaC protein
A: Na-k-cl co transpoer
Answer: A: Na-k-cl co transpoer 
Explanation: Bater syndrome is a group of similar rare conditions that affect the kidneys. It&;s genetic, which means it&;s caused by a problem with a gene. If you have it, too much salt and calcium leave your body when you pee. It also may cause low levels of potassium and high levels of acid in the blood. Reference: GHAI Essential pediatrics, 8th edition