The nurse administers 15 units of glargine insulin at 2100 hours to the client when the client's fingerstick blood glucose reading is 110 mg/dL. At 2300, an NA reports that an evening snack was not given because the client was sleeping. Which instruction by the nurse is most appropriate?

B It is not necessary for this client to have a snack; glargine insulin is absorbed over 24 hours and doesn't have a peak.' C The next time the client wakes up, check a blood glucose level and then give a 15-gram carbohydrate snack.' A You will need to wake the client to check the blood glucose and then give a snack. All diabetics get a snack at bedtime.' D I will notify the HCP; a snack at this time will affect the next blood glucose level and dose of glargine insulin.'