A SysOps Administrator has implemented a VPC network design with the following requirements:

• Two Availability Zones (AZs)
• Two private subnets
• Two public subnets
• One internet gateway
• One NAT gateway

What would potentially cause applications in the VPC to fail during an AZ outage?

A. A single virtual private gateway, because it can be associated with a single AZ only.
B. A single internet gateway, because it is not redundant across both AZs.
C. A single NAT gateway, because it is not redundant across both AZs.
D. The default VPC route table, because it can be associated with a single AZ only.