Which statement is true concerning the results of a completed alcohol test?

In the context of alcohol testing using the Intoxilyzer 9000, the correct answer emphasizes the importance of documentation and validation of the test results. The statement indicates that a successful test must conclude with a "test complete" indication, which confirms that the testing process has been carried out properly and that the machine has generated results based on its internal protocols. Additionally, the requirement for an operator's signature reinforces accountability and provides a verification method that the test was administered by a trained individual. This ensures that the results are reliable and can be adhered to in legal contexts. The focus on the completion status and the operator's involvement is critical in maintaining the integrity of the testing process and the legal standing of the results.