A company has sales of GH 1,000. The company sells three types of goods. Sixty percent of sales are of type A which is sold at a mark-up of 20%. Type B goods are sold at a margin of 30%. The cost of type B sold in the year was GH 154 and total gross profit for the year was GH 184. What was the gross profit for type B? A. GH 10 B. GH 20 C. GH 30 D. GH 66