Which of the following statements is TRUE? Select one: a. Liquidity problems for a bank are made easier because most of their liabilities are not subject to immediate repayment. O b. Most liquidity problems in the banking system arise from bank customers' demand. Oc. Demand for liquidity and sources of liquidity for a bank are generally equal to each other. O d. Liquidity management is easy for a bank because a bank that is very liquid is also very profitable