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【单选题】
OSI将整个通信功能划分为七个层次，划分层次的原则是 Ⅰ．网中各结点都有相同的层次 Ⅱ．不同结点的同等层具有相同的功能 Ⅲ．同一结点内相邻层之间通过接口通信 Ⅳ．每一层使用高层提供的服务，并下层提供服务
A.
Ⅰ、Ⅱ与Ⅳ
B.
Ⅰ、Ⅱ与Ⅲ
C.
Ⅱ、Ⅲ与Ⅳ
D.
Ⅰ、Ⅲ与Ⅳ
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