Which of the following statements does not accurately identify a lesson worth remembering from the credit crisis of 2007-2009?
　　A. Cash reserves, highly liquid securities, and cash flow are the only reliable sources of liquidity, especially in times of crisis.
　　B. In the context of measuring portfolio liquidity risk, complex assets should be treated as illiquid investments.
　　C. Organizations need to ensure that they properly account for the liquidity demands of collateral support agreements.
　　D. Financial firms must always assume there will be an active market for its investment assets at all times.
　　Answer:D
　　The lesson worth remembering is that financial firms must not always assume there will be an active market for its investment assets at all times. Risk analysis is required to consider such crises and how to minimize exposure in such situations. Frequent and detailed cash flow analyses need to be performed to ensure that the available assets in the short term will always be able to cover the corresponding short-term liabilities.