Which of the following statements is NOT true about using Elastic IP Address (EIP) in EC2-Classic and EC2-VPC platforms?

Which of the following statements is NOT true about using Elastic IP Address (EIP) in EC2-Classic and EC2-VPC platforms?
A . In the EC2-VPC platform, the Elastic IP Address (EIP) does not remain associated with the instance when you stop it.
B . In the EC2-Classic platform, stopping the instance disassociates the Elastic IP Address (EIP) from it.
C . In the EC2-VPC platform, if you have attached a second network interface to an instance, when you disassociate the Elastic IP Address (EIP) from that instance, a new public IP address is not assigned to the instance automatically; you’ll have to associate an EIP with it manually.
D . In the EC2-Classic platform, if you disassociate an Elastic IP Address (EIP) from the instance, the instance is automatically assigned a new public IP address within a few minutes.

Answer: A

Explanation:

In the EC2-Classic platform, when you associate an Elastic IP Address (EIP) with an instance, the instance’s current public IP address is released to the EC2-Classic public IP address pool. If you disassociate an EIP from the instance, the instance is automatically assigned a new public IP address within a few minutes. In addition, stopping the instance also disassociates the EIP from it.

But in the EC2-VPC platform, when you associate an EIP with an instance in a default Virtual Private Cloud (VPC), or an instance in which you assigned a public IP to the eth0 network interface during launch, its current public IP address is released to the EC2-VPC public IP address pool. If you disassociate an EIP from the instance, the instance is automatically assigned a new public IP address within a few minutes.

However, if you have attached a second network interface to the instance, the instance is not automatically assigned a new public IP address; you’ll have to associate an EIP with it manually. The EIP remains associated with the instance when you stop it.

Reference: http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/elastic-ip-addresses-eip.html