Assume that the senior managers of FedEx Express and FedEx Ground each have an investment opportunity that would require $20 million of additional operating assets and that would increase operating income by $4 million. 

(a) If FedEx evaluates all of its senior managers using ROI, would the managers of both segments pursue the investment opportunity?

(b) If FedEx evaluates all of its senior managers using residual income, would the managers of both segments pursue the investment opportunity?