exclusive control of the tenant.
(b) If a landlord's duty under the rental agreement exceeds a duty imposed by this section, that portion of the rental agreement imposing a greater duty shall control.
(c) None of the provisions of this section shall be deemed to require the landlord to make repairs when the tenant is in arrears in payment of rent.
(d) For the purposes of this section, the term "multiple housing unit" shall mean a dwelling which contains a room or group of rooms located within a building or structure forming more than one habitable unit for occupants for living, sleeping, eating and cooking.