BGP is the 'Postal Service of the Internet'. What is its primary function?

1. A To dynamically assign unique, temporary IP addresses to client devices as they connect to various disparate subnets within a large enterprise network.
2. B To apply high-level AES encryption to point-to-point traffic between major Internet Service Providers (ISPs) to ensure the global privacy of every data packet.
3. C To allow various Autonomous Systems (AS) to exchange reachability information and path attributes to construct the massive global routing table of the internet.
4. D To act as a high-performance recursive resolver that translates human-readable domain names into the numerical IP addresses required for network-level data delivery.