Which of the following statements regarding immunization is correct? A. If a bank perfectly matches the maturities of the assets and liabilities, it should achieve perfect immunization for equityholders against interest rate risk. B. Banks can immunize their portfolios by matching the maturities of their assets with their liabilities. C. If banks need to satisfy regulatory requirements, they are required to match the durations of their assets with the leverageadjusted durations of their liabilities. D. If a bank immunizes a portfolio of its assets or liabilities against interest rate risk, the bank expects that the portfolio will neither gain nor lose its value when interest rates fluctuate