A vial of medication shows the manufacturer's expiration date as November 2020. The last date on which this medication may be used is:

A vial of medication shows the manufacturer’s expiration date as November 2020. The last date on which this medication may be used is:

A. October 31, 2020.

B. November 1, 2020.

C. November 30, 2020.

D. 6 months after the stated date.