This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Anatomy
A decrease in which of the following would be expected to occur in response to a direct increase in renal aerial pressure? 
Select and explain. 
A. Glomerular filtration rate, B. Water excretion, C. Sodium excretion, D. Extracellular fluid volume
C: Sodium excretion
Answer: C: Sodium excretion 
Explanation: An increase in renal aerial pressure results in pressure natriuresis and diuresis. The loss of sodium and water tends to decrease extracellular fluid volume