The answer is "B. The ROI percentages".
Return on Investment (ROI) refers to a performance measure used to assess the effectiveness of a venture or look at the productivity of various diverse speculations. return for money invested endeavors to specifically quantify the measure of profit for a specific speculation, in respect to the investment’s expense. To figure ROI, the advantage (or return) of a speculation is separated by the expense of the venture. The outcome is communicated as a rate or a proportion.
The formula used to calculate return on investment is:
ROI = (Gain from Investment - Cost of Investment) / Cost of Investment