Answer:
EagleCorp is more likely to create value while Myna Bird Inc. is more likely to destroy value.
Step-by-step explanation:
As a rule of thumb, if a firm's ROIC is greater than its cost of capital, it generates value; if it is less than the cost of capital, the firm destroys value.
Since EagleCorp's ROIC was greater than its cost of capital, the company is more likely to create value. Myna Bird Inc., on the other hand, had a cost of capital that exceeded its ROIC, and was thus more likely to destroy value. Mark would be wise to invest his money in EagleCorp.