Soda Manufacturing Company provides vending machines for soft-drink manufacturers. The company has been investigating a new piece of machinery for its production department. The old equipment has a remaining life of four years and the new equipment has a value of $91,110 with a four-year life. The expected additional cash inflows are $30,000 per year. What is the internal rate of return? A) 12% B) 16% C) 10% D) 8%