At Which Point Is the Osmotic Concentration of Filtrate highest

Multiple Choice

At which point is the osmotic concentration of filtrate highest?

A) as it leaves the glomerular capsule
B) as it enters the proximal convoluted tubule
C) as it enters the descending limb of the nephron loop
D) at the deepest point of the nephron loop between the descending and ascending limbs of the nephron loop
E) as it blends with tubular fluid in the distal convoluted tubule