(b) Whenever, in a case that involves a 99-year ground lease renewable forever, at least 6 months ground rent is in arrears and the landlord has the lawful right to reenter for the nonpayment of the rent, the landlord, no less than 45 days after sending to the tenant by certified mail, return receipt requested, at the tenant's last known address, and also by first-class mail to the title agent or attorney listed on the deed to the property or the intake sheet recorded with the deed, a bill for the ground rent due, may bring an action for possession of the property under § 14-108.1 of this article; if the tenant cannot be personally served or there is no tenant in actual possession of the property, service by posting notice on the property may be made in accordance with the Maryland Rules. Personal service or posting in accordance with the Maryland Rules shall stand in the place of a demand and reentry.

(d) This section does not bar the right of any mortgagee of the lease, or any part of the lease, who is not in possession at any time before expiration of 6 calendar months after execution of the judgment awarding the landlord possession, to pay all costs and damages sustained by the landlord and to perform all the covenants and agreements that are to be performed by the tenant.