Solved by a verified expert:which of the following is correct1, Hydrogen ions are secreted by Na+/H+ antiporters in the proximal tubules2,H+ATPases (proton pumps) in the collecting secrete hydrogen ions3,Cl-/HCO3- antiporters help with hydrogen ion reabsorption a,1 only b, 2 only c, 3 only d, 1 and 2 are correct e, 1,2, and 3 are correctMetabolic reaction can producea, H+b, HCO3-c, Nonvolatile acidsd, Volatile basesE, Ca+1