Which of the following statements regarding proteinuria is true? A. The kidney excretes B. Intermittent (transient) proteinuria is a normal finding, and occurs in 5% of the population. C. Orthostatic...

Which of the following statements regarding proteinuria is true?

A. The kidney excretes<>

B. Intermittent (transient) proteinuria is a normal finding, and occurs in 5% of the population.

C. Orthostatic proteinuria occurs when patients are erect, but not when lying down.

D. All of the above statements are true.