The formation process of urine is as follows: when blood flows through the glomerulus, in addition to protein and macromolecules of blood cells, some substances in plasma, such as water, inorganic salts, glucose, urea, etc., can enter the renal capsule through glomerular filtration to form protourine; That is, the components of raw urine are water, inorganic salts, glucose and urea; When raw urine flows through the renal tubule, substances useful to human body, including most water, all glucose and some inorganic salts, are reabsorbed by the renal tubule, enter the capillaries wrapped around the renal tubule, and return to the blood again; Other wastes remaining in the original urine, such as urea, part of water and inorganic salts, flow out from renal tubules to form urine, that is, the components of urine are urea, part of water and inorganic salts. According to the data in the analysis table, solution B contains glucose, and basically does not contain protein, so solution B should be urine.
So choose: B.