A server is experiencing intermittent connection issues. Some connections to the Internet work as intended, but some fail as if there is no connectivity. The systems administrator inspects the server configuration:

Which of the following is MOST likely the cause of the issue?

A. An internal-only DNS server is configured.
B. The IP netmask is wrong for ens3.
C. Two default routes are configured.
D. The ARP table contains incorrect entries.