Refer to the exhibit.
Which statement describes the impact of setting the User inactivity expiry time option to 90 days?
A . IBE user accounts will expire after 90 days of inactivity, and must register again to access new IBE email message
B . Registered IBE users have 90 days from the time they receive a notification email message to access their IBE email
C . After initial registration, IBE users can access the secure portal without authenticating again for 90 days
D . First time IBE users must register to access their email within 90 days of receiving the notification email message
Reference: https://docs.fortinet.com/document/fortimail/6.4.0/cli-reference/813529/system-encryption- ibe#config_3733402351_2450215