What should you use?

You manage a Microsoft Exchange Server 2019 organization that contains several thousand users.

All the users connect to their mailbox by using a mobile device and Exchange ActiveSync.

You need to prevent the users from syncing email messages that are older than 14 days to the mobile devices.

What should you use?
A . an Outlook Web App mailbox policy
B . a mobile device mailbox policy
C . an ActiveSync device access rule
D . a conditional access policy

Answer: B

Explanation:

References: https://docs.microsoft.com/en-us/exchange/clients/exchange-activesync/mobile-device-mailbox-policies?view=exchserver-2019