Normal Urine Contains Very Little Glucose

Normal urine contains very little glucose. Diabetics have elevated glucose levels in their blood and urine. Which statement best explains the presence of glucose in the urine of diabetics?

A) The loop of Henle fails to reabsorb the glucose in diabetics.
B) The transport of glucose from the pre-urine within the proximal tubule back to the blood cannot occur at a rate fast enough to remove all of the glucose from the urine.
C) Glucose is passing from the blood in the vasa recta into the nephron and entering the pre-urine.
D) Diabetics have active transport of glucose from the blood into the pre-urine when blood glucose levels become very high.