In a data flow diagram data should not flow from在数据流图中，数据不应从:()?
（A）A data store to a process.进程的数据存储。
（B）A process to an external agent.外部代理的进程。
（C）A process to a data store数据存储的进程
（D）None没有人
（E）An external agent to a data store数据存储的外部代理
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