(a) A tenant shall not unreasonably withhold consent to the landlord to enter into the dwelling unit in order to inspect the premises, make necessary or agreed repairs, decorations, alterations, or improvements, supply necessary or agreed services, investigate possible rule or lease violations, investigate possible criminal activity, or exhibit the dwelling unit to prospective or actual purchasers, mortgagees, tenants, workers, or contractors.
(b) A tenant shall not change locks on the dwelling unit without the permission of the landlord.