A company with a MARR = 10% expects the costs to operate and maintain a particular piece of equipment for the next 6 years to be $3,000 each year for years 1-3 and the $6,000 each year for years 4-6, as shown below. $6,000 $6000 $6000 $3000 #3000 33000 1 0 4 Annual Cost to operate and maintain the equipment for the 6 years is closest to: O a. $4,500 b. $4,290 C. $4,060 O d. $3,870