You have created 5 VPC’s in the Ireland region and attached an Internet gateway to them. When you try to create another Internet gateway, you are not able to do so. Which of the following could be a reason for this.

Answer options:

A.You need to create a VPC before you create an Internet gateway
B.You need to ensure the VPC is public before you can create an Internet gateway
C.You have crossed the threshold of 4 internet gateways
D.You have crossed the threshold of 5 internet gateways

Answer - D
The below snapshot from the AWS documentation shows the limitation. Also remember that there is the default gateway already created which is part of the default VPC.For more information on the limits,please refer to the below URL:
http://docs.aws.amazon.com/AmazonVPC/latest/UserGuide/VPC_Appendix_Limits.html#vpc-limits-gateways