Answer:
D. $23,520
Explanation:
The cost of investment in the segment shall be determined from the ROI formula in the following mentioned manner:
ROI=Net profit/cost of investment
25%=$84,000/Cost of investment
Cost of investment=$336,000
The residual income of the segment of any company is determined through following mentioned formula:
Residual income=Net income-(required rate of return*cost of investment)
Residual income=$84,000-(18%*$336,000)
=$23,520
So based on the above calculations, the answer is D. $23,520