Your company has just deployed IPv6 in a VPC. All of the instances currently use a NAT, but once they configured the instances for IPv6 only, they were unable to access the resources on the instances via IPv6.
What is the best option to fix this?

A. Configure the NAT for IPv6.
B. Configure an egress-only internet gateway.
C. Add a route for ::/0 to the NAT.
D. Add an internet gateway.