Refer to the exhibit. Two hub-and-spoke groups are connected through a site-to-site IPsec VPN between Hub 1 and Hub 2. Which two configuration settings are requ...

Refer to the exhibit.
Two hub-and-spoke groups are connected through a site-to-site IPsec VPN between Hub 1 and Hub 2.
Which two configuration settings are required for Toronto and London spokes to establish an ADVPN shortcut? (Choose two.)

A. On the hubs, auto-discovery-sender must be enabled on the IPsec VPNs to spokes. B. On the spokes, auto-discovery-receiver must be enabled on the IPsec VPN to the hub. C. auto-discovery-forwarder must be enabled on all IPsec VPNs. D. On the hubs, net-device must be enabled on all IPsec VPNs.