Darlington Company experienced the following business events during its first month of operations. The company uses the perpetual inventory system. 1) The company purchased $13,100 of merchandise on account under terms 2/10,n/30. 2) The company returned $1,800 of merchandise to the supplier before payment was made. 3) The liability was paid within the discount period. 4) All of the merchandise purchased was sold for $20,000 cash