Messersmith Company is constructing a building. Construction began in 2020 and the building was completed 12/31/20. Messersmith made payments to the construction company of $3000000 on 7/1, $6300000 on 9/1, and $6000000 on 12/31. Weighted-average accumulated expenditures were
a. $3,075,000
b. $3,600,000
c. $9.300.000
d. $15,300,000