After a day of fasting during Ramadan, Amira's blood Na+ level is quite low. Which of the following is likely to occur?
A. A decrease in plasma volume, which induces a decrease in GFR and an increase in Na+ reabsorption rate
B. A decrease in plasma volume, which induces a decrease in GFR and Na+ reabsorption rate
C. A decrease in plasma volume, which induces an increase in GFR and Na+ reabsorption rate
D. An increase in plasma volume, which induces an increase in GFR and a decrease in Na+ reabsorption rate
E. An increase in plasma volume, which induces an increase in GFR and Na+ reabsorption rate
Answer: A
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