An administrator is attempting to troubleshoot an issue between a web server in the DMZ and an internal workstation by reviewing packet captures. Upon inspection, the payloads of the packets are unreadable. Which of the following could be the cause of this issue?

A.
The administrator has yet to authenticate to the network

B.
The sniffer is located on an incorrect subnet

C.
A vulnerability scanner has interfered with the packet capture

D.
End-to-end encryption is applied on the network