A company uses a single AWS Direct Connect connection between their on$-$premises network and their virtual private cloud $($VPC$).$ They want to ensure that the network connectivity is highly available by adding a backup connection. Which network connectivity method provides the most cost$-$effective solution for the backup connection? Another AWS Direct Connect connection through a different Direct Connect location Another AWS Direct Connect connection through the same Direct Connect location An on$-$demand AWS Site$-$to$-$Site VPN connection across the internet An on$-$demand AWS Client VPN connection across the internet