The linear relation between an asset's expected return and its beta coefficient is known as Select one: a. security market line. O b.market risk premium. c. portfolio risk. O d. portfolio weight. The net present value rule can be best stated as Select one: O a. an investment should be rejected if the NPV is positive and accepted if it is negative O b. an investment with greater cash inflows than cash outflows, regardless of when the cash flows occur, will always have a positive NPV O C. an investment should be accepted if the NPV is exactly equal to zero d. an investment should be accepted if the NPV is positive and rejected if its is negative