Project Background Information of disaster project information research mainly includes Who/What/Why three aspects, which of the following description do belong to "What"? (Multiple choice)

Project Background Information of disaster project information research mainly includes Who/What/Why three aspects, which of the following description do belong to "What"? (Multiple choice)
A . a bank has more than XX customers and XX corporate customers.
B . loss of data will be huge losses; business interruption may also cause huge economic losses.
C . business interruption has a huge impact, serivce deployment’s interrupting time is <2h.
D . client wants to build two twin city live data center, to achieve critical business systems double living, disaster recovery planning RPO=0, RTI=0.

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Answer: CD