What Method Should You Use to Author Automation If You

Multiple Choice

What method should you use to author automation if you want to wait for a CloudFormation stack to finish completing in a script?

A) Event subscription using SQS.
B) Event subscription using SNS.
C) Poll using <code>ListStacks</code> / <code>list-stacks</code>
D) Poll using <code>GetStackStatus</code> / <code>get-stack-status</code>