What is a likely cause of the error message "curl failed to verify the legitimacy of the server and therefore could not establish a secure connection to it"?
A. The server's SSL/TLS certificate may be expired, self-signed, or otherwise not trusted by curl.
B. The server is not responding to requests due to a network outage.
C. The curl command is missing required parameters for the connection.
D. The server is blocking connections from curl due to an IP address mismatch.