Which of the following statements concerning K+ is false?
A. Aldosterone secretion is stimulated by high blood levels of K+.
B. An increase in the extracellular K+ concentration leads to depolarization.
C. When aldosterone levels are high, K+ secretion is low.
D. Potassium ions are secreted into the nephron by the distal convoluted tubule.
E. None of the choices are false.
Answer: C
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