Question: When a source GTP-C entity sends messages to a remote GTP-C entity through an intermediate GTP-C entity, what should it consider for enforcing overload control?
Option 1: Only the overload information of the target GTP-C entity.
Option 2: Both the overload information of the target GTP-C entity and the intermediate GTP-C entity.
Option 3: The source GTP-C entity's own overload information.
Option 4: The overload information of all GTP-C entities in the network.
Explanation: According to the specification, when a source GTP-C entity sends messages to a remote GTP-C entity through an intermediate GTP-C entity, it should enforce overload control based on both the overload information of the target GTP-C entity and the intermediate GTP-C entity. This ensures that both the target and intermediate entities are protected from overload.