In order for hemodialysis to be effective in ridding the body of excess electrolytes, which of the following statements must be TRUE?

A) The dialysate must contain electrolytes in the same concentration as in the patient's blood.
B) The dialysate must contain electrolytes in a concentration lower than in the patient's blood.
C) The dialysate must contain electrolytes in a concentration higher than in the patient's blood.
D) The dialysate must not contain electrolytes.

Ans: B) The dialysate must contain electrolytes in a concentration lower than in the patient's blood.