For the cash flows shown, use an annual worth comparison and interest rate of 10% per year. ***A thural explanation of each part is required. Which includes showing what each letter or part of an equation mean and what the number is for each. Must explain why each answer is what it is. If you are only willing to do one part, do part do part b, . Do not copy and paste from other people who have answered this already. Their answers are not thural***| Determine the alternative that is economically best Determine the first cost required for each of the two alternatives not selected in (a) so that all alternatives are equally acceptable