When preparing to administer a prescribed medication to a homeless male at a community psychiatric clinic, the client tells the nurse that he usually takes a different dosage. Which action should the nurse take?

Explain to the client that the dosage has been changed.

Withhold the medication until the dosage can be confirmed.

Inform him that he may refuse the medication and document whether or not he takes it.

Tell him to take the medication then verify the dosage at the next healthcare team meeting.