Which of the following correctly describe steps in the OSI data encapsulation process?（）

• A、The transport layer divides a data stream into segments and may add reliability and flow control information.
• B、The data link layer adds physical source and destination addresses and an FCS to the segment.
• C、Packets are created when the network layer encapsulates a frame with source and destination host addresses and protocol-related control information.
• D、Packets are created when the network layer adds Layer 3 addresses and control information to a segment.
• E、The presentation layer translates bits into voltages for transmission across the physical link.