What happens, by default, when one of the resources in a CloudFormation stack cannot be created?

What happens, by default, when one of the resources in a CloudFormation stack cannot be

created?

A.
The stack creation continues, and the final results indicate which steps failed.

B.
CloudFormation templates are parsed in advance so stack creation is guaranteed to
succeed.

C.
Previously-created resources are kept but the stack creation terminates.

D.
Previously-created resources are deleted and the stack creation terminates.