A Network Engineer is troubleshooting a network connectivity issue for an instance within a public subnet that cannot connect to the internet. The first step the Engineer takes is to SSH to the instance via a local bastion within the VPC and runs an ifconfigcommand to inspect the IP addresses configured on the instance. The output is as follows:

The Engineer notices that the command output does not contain a public IP address. In the AWS Management Console, the public subnet has a route to the internet gateway. The instance also has a public IP address associated with it.
What should the Engineer do next to troubleshoot this situation?

A. Configure the public IP on the interface.
B. Disable source/destination checking for the instance.
C. Associate an Elastic IP address to the interface.
D. Evaluate the security groups and the network access control list.