During 2018, a company reported cost of goods sold of $250,000. At the beginning of 2018, the company had accounts payable of $40,000 and inventory of $80,000. At the end of 2018, the company had accounts payable of $60,000 and inventory of $100,000. How much cash did the company pay for inventory in 2018?

a. $250,000

b. $230,000

c. $210,000

d. $270,000