-stion 6 A factory suggested a maintenance cost of AED 8,000 per year for 9 years and an increment of AED 750 per year thereafter. In addition to that, the factory will pay one AED 3000 at the end of year 5. Assume an interest rate of 6% and operation of 12 years, select the closest correct answers for the below questions from the answer's options provided below What is the present worth of base amount? a. AED 69.397 What is the present worth of gradient amount? AED 8.277 How much should be set aside now to pay for the maintenance cost? CAED 50,143 What is the equivalent annual cost for the overall maintenance? d. AED 12,600 AED 67,070 AED 78,889 SAED 2.327