Which of the following is incorrect when it comes to public IP addressing in AWS

Answer options:

A.A public IP address is assigned from Amazon`s pool of public IP addresses
B.When an IP is disassociated from the instance, it is added back to the pool
C.The Public IP allows the instance to be reachable from the internet
D.You can manually associate or disassociate a public IP address

Answer - D
The AWS documentation mentions the following on public IP addressing
A public IP address is assigned from Amazon`s pool of public IP addresses; it`s not associated with your account. When a public IP address is disassociated from your instance, it`s released back into the pool, and is no longer available for you to use. You cannot manually associate or disassociate a public IP address.
For more information on IP addressing please refer to the below URL:
http://docs.aws.amazon.com/AmazonVPC/latest/UserGuide/vpc-ip-addressing.html