plz answer correctly both

A firm owns a pressure vessel that it is contemplating replacing. The old pressure vessel has annual operating and maintenance expenses of $60,000 per year and it can be kept for five more years, at which time it will have zero salvage value. $30,000 could be obtained for the old pressure vessel if it were sold now A new pressure vessel can be purchased for $120,000. The new pressure vessel will have a market value of $50,000 in five years and will have annual operating and maintenance expenses of $30,000 per year. Using a MARR of 20% per year, determine whether or not the old pressure vessel should be replaced. Use a study period of five years. Defender Challenger Either Not enough information to decide When using the benefit cost ratio method of analyzing a project, which of the following is a true statement? It will always produce a recommendation consistent with present worth, future worth, and annual worth (periodic equivalent) methods. It can be used only to evaluate projects from the public sector (such as bridges and roadways) It will always produce a recommendation consistent with the simple payback period method None of the above