Why does establishing a new HTTPS connection often take 1-2 extra Round Trip Times (RTT) compared to plain HTTP?

1. A Because HTTPS requires a significantly larger initial TCP window size to accommodate the complex cryptographic metadata required for secure communication.
2. B Because the TLS handshake (including certificate exchange and key agreement) must occur *after* the TCP handshake but *before* the first HTTP request is sent.
3. C Because HTTPS application servers are inherently slower at processing incoming connections due to the high-overhead required for real-time data decryption.
4. D Because the AES-GCM encryption algorithm adds significant computational latency to every single byte transmitted from the server's network interface.