XYZ Dairy is considering upgrading an old ice-cream maker. Upgrading is available at two levels: moderate and extensive. Moderate upgrading costs $10,000 now and yields annual savings of $3, 500 in the first year, $3, 300 in the second year, $3, 100 in the third year, and so on. Extensive upgrading costs $15,000 and saves $9,000 in the first year. The savings then decrease by 20% each year thereafter. If the upgrade ice-cream maker will last for eight years, which upgrading option is better? Use a Present-Worth comparison. XYZ's MARR is 10%