Cabell Products Is a Division of a Major Corporation

Cabell Products is a division of a major corporation. Last year the division had total sales of $25,320,000, net operating income of $1,924,320, and average operating assets of $6,000,000. The company's minimum required rate of return is 10%.
-The division's residual income is closest to:

A) $1,324,320
B) $2,524,320
C) $1,924,320
D) $(607,680)