The managers of H.R Construction are considering remodeling plans for an old building the firm currently owns. The building was purchased 8 years ago for $689,000. Over the past 8 years, the firm rented out the building and used the rent to pay off the mortgage. The building is now owned free and clear and has a current market value of $898,000. The firm is considering remodeling the building into a conference centre and sandwich bar at an estimated cost of $1.7 million. The estimated present value of the future income from this centre is $2.9 million. Which one of the following defines the opportunity cost of the remodeling project