Gluck Metal Works stamps sheet metal into blanks that are used in a variety of consumer products. The average cost for sheet metal is $75 per ton. Gluck's waste disposal company charges $50 per ton to dispose of manufacturing waste. The stamping process currently employed by Gluck generates an average of 120 tons of waste per month. What is the net amount Gluck would save per year if stamping waste could be sold to a recycler for $30 per ton? A. $115,200 B. $9,600 C. $72,000 D. $43,200