How does Aruba Central handle security for site-to-site connections between AOS 10 gateways?

How does Aruba Central handle security for site-to-site connections between AOS 10 gateways?
A .  It uses an Aruba proprietary integrity and encryption technologies to secure site-to-site connections, making them resistant to zero day attacks.
B. It automatically establishes IPsec tunnels for all site-to-site (all HUBs and Branches) connections using keys securely distributed by Central.
C. It automatically steers traffic away from Internet-based connections to more secure MPLS connections to reduce encryption overhead.
D. It automatically establishes simple-to-manage and highly secure TLSv1.3 tunnels between gateways.

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Answer: B