Which of the following is NOT listed as a classification for a component type report?

• A. Positive
• B. Inconclusive
• C. Negative
• D. Unknown

Answer: (D)

In a component type report, each component’s result is given a clear classification that communicates the outcome of the testing. The standard options you’ll see are Positive, indicating that lead above the action level was found; Negative, meaning no lead above the action level was detected; and Inconclusive, meaning the data aren’t sufficient to make a call and further testing or sampling is needed. Unknown isn’t used as a final classification because, once testing is complete, the report should provide a definite result or a clear next-step recommendation. If information is missing or the test can’t be completed, that situation is handled by marking the result as Inconclusive and outlining what’s required to resolve it, rather than labeling it Unknown.