A nurse is caring for a client who has a prescription for 81 mg acetylsalicylic acid (Aspirin) daily. Which of the following actions should the nurse plan to take?

Monitor the client for a pain rating of 6 or more.

Encourage the client to eat more green leafy vegetables.

Monitor the client for black, tarry stools.

Monitor the client for a sudden drop to their blood urea nitrogen (BUN) and creatinine levels.