A User Has Hosted an Application on EC2 Instances

Multiple Choice

A user has hosted an application on EC2 instances. The EC2 instances are configured with ELB and Auto Scaling. The application server session time out is 2 hours. The user wants to configure connection draining to ensure that all in-flight requests are supported by ELB even though the instance is being deregistered. What time out period should the user specify for connection draining?

A) 5 minutes
B) 1 hour
C) 30 minutes
D) 2 hours