Answer:
B.9.0%
Explanation:
The Return on investment (ROI) of any entity/corporation/firm can be calculated using the following mentioned formula:
ROI=Net operating income/cost of investment
Assuming in this question
Cost of investment =average operating assets=$504,000
Net operating income=$45,360
ROI=$45,360/$504,000=9%
So based on the above discussion the answer is B.9.0%