Stones Manufacturing sells a marble slab for $1,100. Fixed costs are $35,000, while the variable costs are $450 per slab. The company currently plans to sell 230 slabs this month. What is the margin of safety assuming 80 slabs are actually sold? (Round interim calculations and final calculations to the nearest whole number.) A. $90,100 B. $193,600 C. $28,600 D. $35,000