Hector Company purchased land for an office site by paying $900,000 cash on January 1, 2019. Hector began construction on the office building on January 1 and finished December 31, 2019. The following expenditures were incurred for construction

Date	Expenditures
January 1, 2019	$600,000
April 1, 2019	$840,000
October 1, 2019	$1,500,000
December 1, 2019	$2,400,000

Calculate the weighted-average accumulated expenditure on the project during the year 2019 was:

a. $1,735,000

b. $1,805,000

c. $1,880,000

d. $1,800,000