Which one of these statements is correct?

a. All overseas operations present the same amount of risk.

b. The value of an investment by a firm depends on the size, the timing, and the risk of the investment's cash flows.

c. When selecting one of two projects, managers should only consider the total cash flow from each.

d. Most investors prefer greater risk over less risk.

e. Accountants record sales and expenses after the related cash flows occur.