CYY Corporation is considering an initial investment of $1.5 million in a robotic equipment that would improve the production process and reduce the operating cost. The robotic equipment has an economic life of 20 years, at the end of which, the seller will buy back the equipment for $500,000. Using cost of capital of 12% effective, CYY Corporation estimated the NPV is -$16,500. (a) If the seller agree to give you a rebate at the end of first year, How large would that rebate need to be in order for you to accept this investment? (b) If the rebate is not given, how much should the buyback price be in order for this investment to be acceptable? (c) If the seller neither provide the rebate nor increase the buyback price, how much additional saving in operating cost at the end of each year need to be in order for this investment to be accaptable