ONE QUESTION, Part 3 of 3 of a multi-part question. From textbook Fundamentals of Engineering Economic Analysis, 5th edition, 4th chapter, problem number 26. Please do not use Excel, show work using formulas and calculations. Please show cash flow diagrams, and feel free to ask me any follow up questions. Due in approximately 12 hours.

Two storage structure, given code names Y and Z, are being considered for a military base. The military uses a 5 percent/year expected rate of return and a 24-year life for decisions of this type. The relevant characteristics for each structure are shown below:

	Structure Y	Structure Z
First Cost	$4500	$1000
Estimated Life	12 years	24 years
Est. Salvage Value	None	$1800
Annual Maintenance Cost	$1000	$720

PART C: Which structure should be recommended?