Pentest results indicate that voice over IP traffic is traversing a network. Which of the following tools will decode a packet capture and extract the voice conversations?

Cain and Abel provides a VoIP password sniffer and RTP decoder that records and replays voice conversations captured from the network, making it the correct tool for extracting audio from a VoIP packet capture. It supports protocols such as SIP and H.323 and can export reconstructed calls as WAV files.

John the Ripper is an offline password cracking tool and has no capability to parse packet captures or decode VoIP streams.

Nikto is a web server vulnerability scanner focused on HTTP/HTTPS enumeration and cannot process or decode network packet captures.

Hping is a packet crafting and probing utility used for firewall testing and tracerouting; it does not decode or reconstruct VoIP conversations from capture files.