Charles Haydon Leased an Apartment at the 445/86 Building

Charles Haydon leased an apartment at the 445/86 building. The lease provided that the apartment could not be used "other than as a private dwelling for the Lessee and Lessee's wife, their children, grandchildren, parents, grandparents, brothers and sisters and domestic employees." Mr. Haydon never lived in the apartment but had his mother-in-law move in and pay rent to him. The apartment building prohibited sublets of apartments. The landlord filed suit to end Mr. Haydon's lease. Which of the following is correct?

A) The landlord cannot prohibit sublets.
B) The landlord does not have the authority to control who lives in the apartment.
C) The landlord can develop rules on occupation and subletting and enforce them.
D) A tenant must always live in the leased premises for the lease to be enforceable.