题目内容

下列关于数据流程图说法正确的是（不考虑数据流）：

A. 外部实体可以和数据存储相连。
B. 处理可以和数据存储相连。
C. 两个处理可以通过数据存储相连。
D. 两个数据存储可以和同一个处理相连。

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