A patient with chronic renal failure usually has an increased

 A. True A high blood urea is usually the first sign of renal failure.

B. True As with other end products of protein digestion.

C. False Creatinine clearance, a measure of GFR, is reduced in proportion to the severity of the renal failure.

D. False Loss of the acid vomitus would improve the typical acidosis.

E. True Proteins are a major source of the acid residues and toxic substances which accumulate in renal failure.