Presented below are the production data for the first six months of the year for the mixed costs incurred by Venus Company, Month Cost Units January $5,320 4,100 February $4,620 3,300 March $6,820 5,400 April $11,160 9,300 May $5,900 4,940 June $7,410 6,650 Venus Company uses the high-low method to analyze mixed costs What is the estimated total cost at an operating level of 6,300 units? A. $8,820 B. $6,867 OC. $7,560 D. $7,890