Define the intracellular cyclic AMP

Healthy Person P takes a drug that makes a strong effect on the epithelial cells of the kidney collecting duct within one hour and lasts for one week after taking the drug.  One day after taking the drug, which of the following will create a condition with the symptoms of diabetes insipidus in Healthy Person P?

A. Drug X that blocks endocytosis of AQP2 for one week.

B. Drug Y that results in continuous very high levels of intracellular cyclic AMP (cAMP) for one week.

C. Drug Z is an antagonist at V2 receptors that remains bound to V2 receptors for one week.