Marine Expeditors has three divisions. Division A is the core of the business and represents 80 percent of the firm's operations. Division B is involved only with contractual short-term projects and therefore has about 8 percent less risk then Division A. Division C develops and markets new products and is about 12 percent riskier than Division A and about equal in size to Division B. The manager of Division A has suggested that the operations of his division be increased by 10 percent next year. The proposed project should probably be assigned a required return that is equal to _______percent of the firm's weighted average cost of capital.