Where should an Elastic Beanstalk configuration file named healthcheckur1.config be placed in the application source bundle?

Where should an Elastic Beanstalk configuration file named healthcheckur1.config be placed in the application source bundle?
A. In the root of the application
B. In the bin folder
C. In healthcheckur1.config.ebextension under root
D. In the .ebextensions folder