please help me with this question

In the financial markets, if the interest rate is lower than the equilibrium interest rate that equates money demand (Md) and money supply (Ms), we can say that: O a. The markets have excess demand for bonds Ob. All of the answers here are incorrect c. The central bank has to decrease the money supply to return the markets to equilibrium O d. The markets have excess demand for money Oe. The markets have excess supply of money