Lens Care Incorporated (LCI) manufactures specialized equipment for polishing optical lenses. There are two models - one mainly used for fine eyewear (F-32) and another for lenses used in binoculars, cameras, and similar equipment (B-13). The manufacturing cost of each unit is calculated using activity-based costing, using the following manufacturing cost pools: Cost Pools Allocation Base Costing Rate Materials handling Number of parts $ 2.40 per part Manufacturing supervision Hours of machine time $ 14.80 per hour Assembly Number of parts $ 3.30 per part Machine setup Each setup $ 56.50 per setup Inspection and testing Logged hours $ 45.50 per hour Packaging Logged hours $ 19.50 per hour LCI currently sells the B-13 model for $1,775 and the F-32 model for $1,220. Manufacturing costs and activity usage for the two products are as follows: B-13 F-32 Direct materials $ 164.50 $ 75.60 Number of parts 160 120 Machine hours 7.90 4.20 Inspection time 1.70 0.80 Packaging time 0.90 0.50 Setups 3 2 The profit margin based on manufacturing cost for model B-13 is: $481.68. $239.09. $317.18. $314.69. $338.16. please choose the best option. can i have an answer within 15minutes please