A nurse is educating a client with a new prescription of alendronate (Fosamax) for osteoporosis. Which of the following statements should the nurse include in her patient's education about this medication?

A. After taking alendronate, clients should not lie down flat for at least 30 minutes to avoid esophageal irritation and potential damage. B. Alendronate should be taken before breakfast, but the client should not lie down afterward. It should be taken on an empty stomach. C. The correct instruction is to sit up or ambulate for at least 30 minutes after taking alendronate. This prevents esophageal irritation and ensures proper absorption. D. Alendronate is typically taken whole with a full glass of water, not chewed, and should not be taken after meals.