Which of the following statements regarding the relationship between interest rate and risk premium is correct? Select one O a Other things equal, the lower the liquidity, the lower the interest rate ObOther things equal, the longer the maturity, the lower the interest rate. Oc Other things equal, the risk has no impact on the real risk-free rate Od Other things equal, the lower the expected inflation rate, the higher the interest rate Oe. Other things equal, the higher the credit rating the higher the interest rate