【正确答案】
B
【答案解析】A CDO (collaterized debt obligation) is a debt obligation that is backed by an underlying diversified pool of business loans, mortgages, emerging market debt, corporate bonds, asset-backed securities, or non-performing loans. An ABS (asset-backed security) is a debt obligation that is backed by credit card debt, auto loans, bank loans, and corporate receivables. A CMO (collaterized mortgage obligation) is a debt obligation that is backed by mortgages.