Final answer:
Tenants who stay in a rental property without the landlord's permission after their lease has expired are known as tenants at sufferance.
Step-by-step explanation:
The tenants in question, having stayed in the rental property after their lease has expired, and after receiving written notice to quit from the landlord who also refuses to accept further rent, are best described as C. tenants at sufferance. This term refers to an individual who has legally entered a property but remains there without the owner's permission after their right to occupy has ended. Since the lease is over and the landlord has given notice but the tenants have not vacated the property, they do not hold any estate in common or joint tenancy, and do not qualify as a holdover tenancy as the landlord has refused to accept rent and has given notice.