Question $6$:

In the formula ROI$=\frac{C}{A+B},$ where ROI stands for return on investment, $C,A,$ and $B$ represent

respectively.

the one$-$time cost of acquisition and implementation, the value of gains from productivity improvements for the time period, and operating costs for a new or enhanced

system for the time period

operating costs for a new or enhanced system for the time period, the value of gains from productivity improvements for the time period, and the cost of preexisting

labor capital for the time period.

the value of gains from productivity improvements for the time period, operating costs for a new or enhanced system for the time period, and the one$-$time cost of

acquisition and implementation

operating costs for a new or enhanced system for a time period, the one$-$time cost of acquisition and implementation, and the value of gains from productivity

improvements for the time period