An owner of a hardware store leased a building for 20 years at a flat rate of rental. After 10 years, the economic rent for the building has increased substantially over the contract rent. Which of the following is true?

A:This would be an economic advantage to the lessor

B:This would be an economic advantage to the lessee.

C: This would have no effect on either the lessor or the lessee

D:The lessee will most likely attempt to break the lease