Which of the Following Statements Is FALSE

Which of the following statements is FALSE?

A) The Capital Asset Pricing Model is the most important method for estimating the cost of capital that is used in practice.
B) Because the risk that determines expected returns is unsystematic risk,which is measured by beta,the cost of capital for an investment is the expected return available on securities with the same beta.
C) A common assumption is that the project has the same risk as the firm.
D) To determine a project's cost of capital we need to estimate its beta.