You have been tasked with auditing the security of your VPC. As part of this process, you need to start by analyzing what traffic is allowed to and from various EC2 instances. What two parts of the VPC do you need to check to accomplish this task?
a. NACLs and Subnets
b. Security Groups and Internet Gateways
c. NACLs and Route Tables
d. Security Groups and NACLs