18. A production company wants to install a smart production plant that will have a 10-year useful life. The production plant will cost 450.000 SR, and its salvage value will be 50,000 SR. The maintenance and operating costs will be 12,000 SR for the first three years and 15,000 SR for the remaining years. Assuming the company's desired return on investment is 12%, what will be the minimum annual savings required to make the investment worthwhile? (select the closest answer) n. 90.518 SR b. 85,423 SR c. 81.934 SR d. 94.202 SR