Question 8 Not yet answered Marked out of 10 p Flag question Suppose that a machine with an expected life of 6 years costs $50,000. If the machine has an operating expense of $4,500 each year and the opportunity cost of capital is 10%, the equivalent annual cost is closest to: Select one: a. $16,000 b. $12,500 C. $9,000 d. $4,500