I tried solving the problem but seem to be stuck at Case B. Will give a thumbs up if answered ASAP

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Manufacturing cost data for Crane Company, which uses a job-order cost system, are presented below. Indicate the missing amount for each letter. Assume that in all cases manufacturing overhead is applied on the basis of direct labour. cost and the rate is the same. Manufacturing cost data for Crane Company, which uses a job-order cost system, are presented below. Indicate the missing amount for each letter. Assume that in all cases manufacturing overhead is applied on the basis of direct labour cost and the rate is the same