TuCo begins operations in 20X1 and uses the perpetual method and moving average costing. On January 4, TuCo buys 1, 200 units of merchandise @ $3. On January 8, it sells 300 units. On January 11, it buys 1, 100 units @ $4, and on January 30, it sells 600 units. On January 30, what does TuCo record as the cost of goods sold? a. $2, 430 b. $2, 130 c. $2, 400 d. $1, 800