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You have an VPC with a public subnet. Three EC2 instances currently running inside the subnet can
successfully communicate with other hosts on the internet. You launch a fourth instance in the same subnet,
using the same AMI and security group configuration you used for the others, but find that this instance cannot
be accessed from the Internet. What should you do to enable Internet access?

A.
Deploy a NAT instance into the public subnet.

B.
Modify the routing table for the public subnet.

C.
Assign an elastic IP address to the fourth instance.

D.
Configure a publicly routable IP address in the host OS of the fourth instance.

Explanation:

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