What does this STIX indicate?

Refer to the exhibit.

An engineer is analyzing this Vlan0386-int12-117.pcap file in Wireshark after detecting a suspicious network activity. The origin header for the direct IP connections in the packets was initiated by a google chrome extension on a WebSocket protocol. The engineer checked message payloads to determine what information was being sent off-site but the payloads are obfuscated and unreadable.

What does this STIX indicate?
A . The extension is not performing as intended because of restrictions since ports 80 and 443 should be accessible
B . The traffic is legitimate as the google chrome extension is reaching out to check for updates and fetches this information
C . There is a possible data leak because payloads should be encoded as UTF-8 text
D . There is a malware that is communicating via encrypted channels to the command and control server

Answer: C