12. Determine the quantity that should be manufactured to maximize profit. The quantity is: (A) Less than 1600 couches (B) Between 1600 and 1640 couches (C) Between 1640 and 1680 couches (D) Between 1680 and 1720 couches (E) More than 1720 couches Profit Equation Explain: A company has determined that the demand function for a 96 -inch couch is given by p=32000.8x where p is the price per couch and x is the number of couches sold. The fixed cost of producing a line of couches is $840,000 and each couch costs $400 to make. Use this information to answer the next two questions (11 \& 12)