Several alternatives are under consideration to enhance security at a county jail. Since the alternatives serve different areas of the facility, all that are economically attractive will be implemented. Determine which one(s) should be selected, based on a B/C analysis using an interest rate of 7% per year and a 10-year study period.

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Steel Extra Cameras (EC) Sensors (NS) Tubing (ST) Control (AC) 38,000 49,000 New Access First cost, $ M&O, $/year Bene fits, $lyear Disbenefits, $/year 26,000 87,000 64,000 99,000 42,000 61,000 38,000 110,000 160,000 21,000 74,000 32,000 52,000 14,000