[Climate-Control Conflict] Pablo Rented Space for His Personal Training Business

[Climate-Control Conflict] Pablo rented space for his personal training business from Natalia. Natalia and Pablo have an ongoing dispute regarding the air conditioning. Pablo wants a new unit because he says the old one needs repairs too often, but Natalia says that the old unit is fine. One day after a particularly fierce dispute, Pablo comes to work to find that the aerobics room and weight lifting room, areas with air conditioning problems, have been padlocked. Pablo is furious and calls Natalia who tells him that if the areas are so bad, then he should just stay out. Pablo immediately rents different space in a nearby building and moves his business.
-What promise in the lease did Natalia breach, if any?

A) None
B) The covenant of real use
C) The covenant of advantageous business practices
D) The covenant of fair use
E) The covenant of quiet enjoyment