Stones Manufacturing sells a marble slab for $1,100. Fixed costs are $34,000, while the variable costs are $550 per slab. The company currently plans to sell 210 slabs this month. What is the margin of safety assuming 80 slabs are actually sold? (Round unit calculations up to the nearest whole number.) O A. $34.000 OB. $19,800 O C. $47,300 OD. $162,800