What step should be taken?

You need to protect your users from untrusted senders sending encrypted attachments via email. You must ensure that these messages are not delivered to users’ mailboxes.

What step should be taken?
A . Use the security center to remove the messages from users’ mailboxes
B . Use Google Vault to remove these messages from users mailboxes.
C . Enable a safety rule to send these types of messages to spam.
D . Enable a safety rule to send these types of messages to a quarantine.

Answer: D