To follow is information about the units produced and total manufacturing costs for Pine Enterprises for the past six months. Month Number of units produced Total manufacturing costs January 6,900 $5,000 February 7,500 $8,000 March 6,600 $7,550 April 6,800 $7,650 May 5,000 $6,900 June 7,000 $7,750 Using the high-low method, what will the total monthly manufacturing costs be if the company produces 9200 units? $4,600 $8,600 $7,500 $2,900