Gibson Corporation Gibson Corporation has the following information for the current month: All materials are added at the start of the production process. Gibson Corporation inspects goods at 75 percent completion as to conversion. Refer to Gibson Corporation. Assume that the costs per EUP for material and conversior are $1.00 and $1.50, respectively. What is the amount of the period cost for the current month using FIFO? Select one: a. $9,375 b. $10,625 c. $12,500 d. $0