Amazon EC2 is hosted in multiple locations world-wide. These locations are composed of regions and Availability Zones. Each region is a separate geographic area. Each region has multiple, isolated locations known as Availability Zones. Amazon EC2 provides you the ability to place resources, such as instances, and data in multiple locations. Resources aren’t replicated across regions unless you do so specifically.
B.
Regions and Availability Zones
Amazon EC2 is hosted in multiple locations world-wide. These locations are composed of regions and Availability Zones. Each region is a separate geographic area. Each region has multiple, isolated locations known as Availability Zones. Amazon EC2 provides you the ability to place resources, such as instances, and data in multiple locations. Resources aren’t replicated across regions unless you do so specifically.
http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/using-regions-availability-zones.html#concepts-regions-availability-zones
B
B
Answer is B = It is Regional based on Availability Zones
The answer is B
http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/resources.html
An instance is tied to the Availability Zones in which you launched it. However, note that its instance ID is tied to the region.