Statements and are incorrect because dialysis eliminates urea and potassium from the body. In renal failures, there will be reduced absorption of calcium ions from gastrointestinal tract due to the non-formation of calcitriol. Normally, calcitriol increases the rate of absorption from the gastrointestinal tract into the blood. RBC production will be reduced, due to reduced erythropoietin hormone. Thus, statements and are correct.