Mark is looking to buy 'a new snowblower. He has a choice between two snowblowers A and B. Mark has a MARR of 8%. The costs associated with each snowbiower are shown in the table below. __ _m _m we 5 10 Service life saw (a) Using the information above, determine which alternative is preferable. Use a present worth comparison and the least common multiple of the service lives. (b) For a ve-year study period, what salvage value for snowblower B would result in its being the preferred choice? [k