[单选题]
At which position intp kr-br t.ag0mt x ;3dj6fr5(qo2og-c fj3rc6vp5wu65 1 rgh the nephron would you expect the solute concentration of the filtrate to be between 200% and 300% that of the normal blood solute concentration and for water, but 65r3jcwchgu r6vf 5p1 not sodium, to be drawn out of the filtrate into the medulla?
