12. 6.69 Jewel-Osco is evaluating three biometric systems that identify customers by a finger scan and immediately deduct the amount of the bill directly from their checking accounts. The alternatives were ranked according to increasing initial investment and identified as alternatives A, B, and C. Based on the incremental rates of return shown and the MARR of 16% per year, the alternative to select is:

1. A 2. B 3. C 4. DN Table Summary:

Table divided into 2 columns with the headings marked as:

column 1, comparison; and column 2, delta I in percentage.

ComparisonΔi*, %

A vs. DN 23.4 B vs. DN 8.1 C vs. DN 16.6 B vs. A −5.1 C vs. A 12.0 C vs. B 83.9