Question：Which two of the following approaches could be taken to reduce the riskiness of a capital investment project?
　　A. Set a maximum payback period.
　　B. Use a high discounting rate.
　　C. Favour projects with expected cash flows having high standard deviations.
　　D. Set a minimum payback period.
　　The correct answers are: Set a maximum payback period; Use a high discounting rate.
　　解析：A maximum payback period can be set to reflect the fact that risk increases the longer the time period under consideration.
　　A high discounting rate can be used so that a cash flow which occurs quite some time in the future will have less effect on the decision.