Anadromous Bony Fish, Such as Shad, Leave the Ocean and Return

Anadromous bony fish, such as shad, leave the ocean and return to their natal freshwater streams to breed.Given this change in environment from salt water to freshwater, you would expect to see all of the following changes in their osmoregulation except

A) increased drinking rate.
B) decreased concentration of urine.
C) change in the direction of ion-pumping across gills to draw more ions from the water, moving them into the blood.
D) increased absorption of ions in their guts.
E) increased amount of urine.