Fadel, a financial economist, developed three scenarios for the expected return on a new investment. In the worst case, he expects a return of 10%, but under much better outcomes and improved economic conditions, he expects a return of 17%. If the situation remains the same, he expects a return of 15%. What is the range for this investment?

a.

15%

b.

5%

c.

None of the above

d.

2%

e.

7%