Your organization's on-premises networking team is reporting frequent BGP session flaps toward your Google Cloud environment. You need to review the BGP configuration. What should you do?

A. Switch to static routing. B. Increase the BGP hold timer to 36000 seconds max. C. Ensure that graceful restart is enabled on the on-premises router. D. Ask the on-premises team to enable Bidirectional Forwarding Detection (BFD).