Austin DeCoster Asked the Landlord to Allow Installation of DirecTV

Austin DeCoster asked the landlord to allow installation of DirecTV in his apartment. The landlord consented. When the DirecTV representative arrived to install the necessary equipment in Austin's apartment, the landlord gave him access. Austin had changed his mind about DirecTV. Which of the following is correct?

A) The landlord was not permitted to have access to Austin's apartment.
B) The landlord must always have permission to gain access to a tenant's apartment.
C) The landlord can allow access only for landlord repairs.
D) The landlord had authority to allow the DirecTV representative into Austin's apartment.