10.甲商店期初存貨$50,000、進貨$150,000、進貨費用$15,000、進貨折讓$5,000、預付貨款$20,000、銷貨收入$350,000、銷貨退回$50,000,營業成本率60%,則該商店期末存貨為何?(A)$30,000(B)$50,000(C)$84,000(D)$92,000