When thinking of AWS OpsWorks, which of the following is not an instance type you can allocate in a stack layer?

specified daily and weekly schedule. They allow your stack to automatically adjust the number of instances to accommodate predictable usage patterns. Load-based instances are automatically started and stopped by AWS number of instances to accommodate variations in incoming traffic. Load-based instances are available only for Linux- based stacks. http://docs.aws.amazon.com/opsworks/latest/userguide/welcome.html

A.
24/7 instances

B.
Spot instances

C.
Time-based instances

D.
Load-based instances

Explanation:
Explanation/Reference:
AWS OpsWorks supports the following instance types, which are characterized by how they are started and stopped.
24/7 instances are started manually and run until you stop them.Time-based instances are run by AWS OpsWorks on a
OpsWorks, based on specified load metrics, such as CPU utilization. They allow your stack to automatically adjust the