please help and fully explain!

A Southeen Georgia school district is considering ordering 60 propane-fueled school buses. Theyre heakthor, thoy're cleaner buming, and theyre much quieter than the diesel option," said a school adminlstrator. Propano-powered buses also reduce greonhouse gasses by 19% comparod to gasoline-pontred buses and 9$ compared to diesel ones. But they come at a premium- $90,000 for a propane model, $20,000 more than the diosel equivalont. mileage is 10mpg for the propane model vs. 8 mpg for diesel. The life of a school bus in the district mereses 8 years, and each but tranels an arerage of 33,000 miles per year because the datrict in so larpe and rurat. Which bus is the better choice based on a Kle-cycle analysis? The fotal cost of using one propane-fueled bus during its ife cycle is : (Round your response to the nearest dodar)