33. Which of the following statements concerning excretory system is FALSE? (A) Urea can be processed by filtration, reabsorption, and secretion during the process of urine formation. (B) Kidney contributes pH balance in body fluid. (C) Ascend limb of the loop of Henle is the site for reabsorption of water. (D) Proximal tubule is the major site for reabsorption of nutrients. (E) The final concentration of the urine is determined in the collecting duct.