What Is the Metabolic Abnormality That Underlies the Characteristic Symptoms of Diabetes Mellitus?

A) a failure of the kidney tubules to reabsorb enough glucose from the urine
B) a failure of the gastrointestinal epithelium to absorb enough glucose from the food
C) an inability of the body’s cells to switch from glucose metabolism to fat metabolism between meals
D) an inability of the body’s cells to retain glucose they have absorbed from the blood
E) an inability of the body’s cells to absorb enough glucose from the blood