On May 1, 2020, Concord Corporation began construction of a building. Expenditures of $597600 were incurred monthly for 5 months beginning on May 1. The building was completed and ready for occupancy on September 1, 2020. For the purpose of determining the amount of interest cost to be capitalized, the weighted-average accumulated expenditures on the building during 2020 were

$597600.

$2390400.

$2988000.

$498000.