59 一藥物於腎臟系統之廓清率（renal clearance）一般可視為腎臟三個作用功能速率：filtration rate，secretion rate，reabsorption rate之組合，下列組合中何者為正確的？(A)filtration rate+secretion rate+reabsorption rate(B)secretion rate-filtration rate+reabsorption rate(C)filtration rate-secretion rate+reabsorption rate(D)filtration rate+secretion rate-reabsorption rate