SDCL § 5-5-27: Extension or renewal on application by lessee--Cancellation of lease on failure to renew.

If the lessee wishes to exercise the option to receive a new lease, the lessee shall sign one copy of the duplicate notice mailed to the lessee by the commissioner. The lessee shall return it to the commissioner on or before the first day of December preceding the expiration date of the lease. Upon receipt of the signed option, the commissioner shall grant a five-year extension or renewal. The lease may be canceled if the lessee fails to return the notice to the commissioner on or before the first day of December.