At 1000 on 11/14/19, the Nurse Takes a Telephone Prescription

At 1000 on 11/14/19, the nurse takes a telephone prescription for "metoprolol 5 mg intravenously now." What is the latest date and time the nurse will expect the prescriber to countersign the order?

A) 11/14/19 at 1200
B) 11/14/19 at 2200
C) 11/15/19 at 1000
D) 11/16/19 at 1000