Beginning Inventory Jan. 1 (carried over from 2017) 20 units @ $10

Purchase Jan 25 2018 40 units @ 11

Purchase June 20 40 units @ 12

Purchase Oct 10 50 units @ 13

Assuming the perpetual moving-average cost flow assumption, what is the company's cost of goods sold for the 120 items sold in 2018? a. $1,386 b. $1,410 c. $1,416 d.$1,460