With respect to the assets underlying a collateralized debt obligation (CDO), the assets:
　　A. can either be actively managed or held static.
　　B. must be actively managed and cannot be held static.
　　C. must be held static for at least a year before they can be actively managed.
　　D. cannot be held static for more than a year and must be actively managed.
　　Answer:A
　　The assets can either be managed or held static.