Which statement concerning virtual servers is true?

Idle server connections are subject to timeout values defined in the TCP and HTTP profiles and cannot be kept open indefinitely - they will be closed after the configured idle timeout period.

HTTP compression on BIG-IP is applied between BIG-IP and the client, not between BIG-IP and the backend servers, so this direction is incorrect.

BIG-IP supports load balancing without address translation when using features like Direct Server Return or transparent mode, so translation is not a prerequisite.

When an HTTP profile is applied to a virtual server and OneConnect or HTTP keep-alive is configured, BIG-IP can reuse an existing TCP connection to the pool member for multiple sequential HTTP requests rather than tearing it down after each transaction. This reduces TCP handshake overhead on the server and improves throughput. Connection reuse is a core capability of BIG-IP's HTTP profile combined with the connection pooling mechanism.

The statement is incomplete as presented, but the word 'always' makes any absolute claim false because address translation can be disabled using SNAT None or wildcard configurations.