Anadromous Bony Fish,such as Shad,leave the Ocean and Return to Their

Anadromous bony fish,such as shad,leave the ocean and return to their natal freshwater streams to breed.When their environment changes from salt water to fresh water,these fish are likely to

A) increase their drinking rate.
B) produce an increased volume of more dilute urine.
C) maintain the same direction of ion-pumping across their gills.
D) decrease the absorption of ions in their guts.
E) show a decreased movement of water from the environment into body tissues.