What should you configure in the Safe Attachments policies?

You implement Safe Attachments policies in Microsoft Defender for Office 365.
Users report that email messages containing attachments take longer than expected to be received.
You need to reduce the amount of time it takes to deliver messages that contain attachments without compromising security. The attachments must be scanned for malware, and any messages that contain malware must be blocked.
What should you configure in the Safe Attachments policies?
A. Dynamic Delivery
B. Replace
C. Block and Enable redirect
D. Monitor and Enable redirect