What is the effect of antidiuretic hormone on the kidney tubules?

A.It causes Na+ to be absorbed from the filtrate into the tubular cells.

B.It causes the concentration of urine to decrease.

C.It causes the filtrate volume to increase.

D.It causes the walls of the collecting duct to become permeable to water.

正确答案：It causes the walls of the collecting duct to become permeable to water.