In a diabetic patient , glucose appears in the urine. Which of the following statements is the best explanation for this phenomenon ?

Options

A. Low plasma levels of glucose causes glucose to be secreted by the proximal tubule.
B. The kidney is a significant site for glucose synthesis , which causes glucose to occasionally appear in the urine.
C. The high concentration of glucose saturates the reabsorption pumps , causing glucose to appear in the urine.
D. The vasa recta transport glucose into the urine.

Answer

C