Mr. Khan drops off the following prescription:
Oxycodone 10 mg tablets #30Sig: 1 tab po q8h prn pain
If the patient received a dose in the emergency room at 9:00 P.M., when is the earliest time he could take the next dose?
a) 11:00 P.M.
b) 2:00 A.M.
c) 5:00 A.M.
d) 9:00 A.M.