Which of the Following Statements Is Most Correct

Which of the following statements is most correct?

A) the liquidity preference theory holds that interest rates are determined by the supply of and demand for loanable funds.
B) the loanable funds theory and the liquidity preference theory are incompatible with each other because one is right and the other is wrong.
C) finding the yield to maturity on a corporate bond is comparable to finding the internal rate of return.Marketable U.S.securities are mainly sold through dealers and have interest payments that are federally taxable. Not in chapter---replace with new distracter.
D) the market segmentation theory holds that securities of different maturities are perfect substitutes for each other.