All the users in your company have Microsoft 365 mailboxes.
Each user connects to Microsoft Exchange Online and OneDrive for Business from a personal computer that runs Windows 10.
You need to ensure that the users can save attachments to OneDrive for Business only when they connect to their mailbox from Outlook on the web.
What should you create?
A . an Exchange ActiveSync device access rule
B . an app protection policy in Microsoft Endpoint Manager
C . an Outlook Web App policy in Exchange Online
D . a device compliance policy in Microsoft Endpoint Manager
Answer: B