Question: What is the primary purpose of creating an `EP_transport` instance in the context of a RAN or CN SubNetwork?
Option 1: To manage and orchestrate radio resources exclusively within a single Network Slice Subnet.
Option 2: To establish a direct connection between User Equipment (UE) and the Core Network (CN) bypassing Transport Networks.
Option 3: To monitor and analyze network traffic for security threats across all Network Slices.
Option 4: To aggregate transport level information for one or multiple `EP_Application` instances, facilitating transport network requirements exchange with TN Management Systems.
Explanation: Creating an `EP_transport` instance is primarily intended to logically represent the transport interface within a RAN or CN SubNetwork, aggregating transport level information for multiple `EP_Application` instances across one or more Network Slice Subnets, enabling exchange of transport network-related requirements with external Transport Network (TN) Management Systems.