Messersmith Company is constructing a building. Construction began in January 2020 and the building was completed on 12/31/20. Messersmith made payments to the construction company of $3,000,000 on 6/1, $4,800,000 on 9/1, and $6,000,000 on 12/1. Weighted-average accumulated expenditures were: Select one: a. $3,200,000. b. $2,700,000. c. $3,850,000. d. $3,600,000.