You are answering a USMLE-style medical question. Question: A 39-year-old woman presents with headaches, constipation, increased thirst, and increased urinary frequency. Her blood pressure is 160/100 mm Hg and pulse is 67/min. Blood tests reveal high blood glucose and low potassium level. Abdominal CT scan shows a well-circumscribed homogeneous mass in the left adrenal gland. The hormone excess responsible for her symptoms uses which of the following pathways to exert its action? Options: A) Intracellular receptors B) cAMP pathway C) cGMP pathway D) JAK/STAT pathway Reply with ONLY the letter of the correct answer (A, B, C, or D). No explanation.