You are designing a new network infrastructure for your customer in Google Cloud. Your customer requires a connection between two Google Cloud VPCs that must include a VPN tunnel. You want to follow Google-recommended practices while ensuring maximum availability of the connection. Which VPN configuration should you choose?

A. Policy-based VPN using Classic VPN between the two Google Cloud VPCs B. Border Gateway Protocol (BGP)-based VPN using Classic VPN between the two Google Cloud VPCs C. Route-based VPN using Classic VPN between the two Google Cloud VPCs D. Border Gateway Protocol (BGP)-based VPN using HA VPN between the two Google Cloud VPCs