What can a Citrix Administrator do to prevent users from viewing this message?

Scenario: A user is attempting to access a web server, which is load-balanced by the NetScaler using HTTPS. The user received the following message:

SSL/TLS error: You have not chosen to trust “Certificate Authority” the issuer of the server’s security certificate.

What can a Citrix Administrator do to prevent users from viewing this message?
A . Ensure that the intermediate Certificate is linked to the Server Certificate.
B . Ensure that the user has the Server Certificate installed.
C . Ensure that the intermediate Certificate is linked to the Root Certificate.
D . Ensure that the user has the Certificate’s Public key.

Answer: A

Explanation:

Reference: https://support.citrix.com/article/CTX108800