3. The average duration of a bank's assets is 4.91 and the average duration of its liabilities is 3.74. Also assume that the bank has $500 million in assets and $480 million in liabilities. Current interest rates are 4.2 percent. a. What is the impact on the bank's equity if interest rates rise by 20 basis points? b. Can you tell me how large of an interest rate increase would wipe out the bank's equity? c. How might you protect the bank from such a rate increase? 3. The average duration of a bank's assets is 4.91 and the average duration of its liabilities is 3.74. Also assume that the bank has $500 million in assets and $480 million in liabilities. Current interest rates are 4.2 percent. a. What is the impact on the bank's equity if interest rates rise by 20 basis points? b. Can you tell me how large of an interest rate increase would wipe out the bank's equity? c. How might you protect the bank from such a rate increase