For the data below, conduct a challenger-defender analysis to select the best alternative using the incremental delta B/delta C ratio analysis. MARR= 12%. Keep in mind that salvage value is treated as an offset to initial cost rather than a benefit in this type of analysis. Report delta B/delta C ratio values to two (2) decimal places. When entering a number less than one (1), be sure to include a zero (0) to the left of the decimal place. Enter challenger/defender values as X, Y, or Z