Which of the following is true of ROI?

Which of the following is true of ROI?

A)    If Cost is $5 and Revenue is $5, your ROI is 0%
B)    If Cost is $5 and Revenue is $5, your ROI is 20%
C)    If Cost is $5 and Revenue is $5, your ROI is 100%
D)    If Cost is $5 and …

Answer: A