11-4 Sunk costs and opportunity costs Masters Golf Products, Inc., spent 3 years and $1,000,000 to develop its new line of club heads to replace a line that is becoming ob- solete. To begin manufacturing them, the company will have to invest $1,800,000 in new equipment. The new clubs are expected to generate an increase in operating cash inflows of $750,000 per year for the next 10 years. The company has determined that the existing line could be sold to a competitor for $250,000. a. How should the $1,000,000 in development costs be classified? b. How should the $250,000 sale price for the existing line be classified? c. Depict all the known relevant cash flows on a time line