The nurse reviews medication orders and is to give warfarin (Coumadin). Which of the following actions should the nurse take first? 1. Obtain a glass of water. 2. Prepare the medication for...

The nurse reviews medication orders and is to give warfarin (Coumadin). Which of the following actions should the nurse take first? 1. Obtain a glass of water. 2. Prepare the medication for administration. 3. Review international normalized ratio result. 4. Document the medication administration.