Which two correctly describe steps in the OSI data encapsulation process?

Which two correctly describe steps in the OSI data encapsulation process? (Choose two.)
A. The presentation layer translates bits into voltages for transmission across the physical link.
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 adds Layer 3 addresses and control information to a segment.
D. Packets are created when the network layer encapsulates a frame with source and destination host addresses and protocol-related control information.
E. The transport layer divides a data stream into segments and may add reliability and flow control information.

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