Explanation:

- In a situation of excess demand, the central bank might aim to reduce the money supply to curb inflation.

- Option (A): Decreasing the Cash Reserve Ratio (CRR) would increase the money that banks can lend, which could worsen excess demand.

- Option (B): Increasing the bank rate makes borrowing more expensive, reducing money supply and helping to control excess demand.

- Option (C): Increasing the Statutory Liquidity Ratio (SLR) means banks have to hold more in liquid assets, reducing the money available for loans, which helps manage excess demand.

- Option (D): Decreasing the SLR increases the money supply, not suitable for controlling excess demand.

- Correct Answer: Option 2 (B) and (C) only.