Vintage Weaponry is owned and operated by a craftsman who makes replicas of historic firearms for museums, sportsmen, and collectors. He is currently producing 40 flintlock muskets per month. Data are as follows: Sales price per unit Variable cost per unit Fixed costs per month $720 700 720 If Vintage expects to sell 50 units per month, how much is his margin of safety expressed in sales revenue? O A. $36,000 O B. $10,080 C. $9,800 O D. $25,920