A. None (Koster, Anonymus)

"A. None (Koster, Anonymus)" refers to a specific work or concept associated with the author Koster or the anonymous figure known as Anonymus. In a broader context, it often signifies a form of anonymous or unspecified attribution, where the author's identity remains unknown or uncredited. This notation might appear in academic or literary references to indicate that the work’s authorship is uncertain or deliberately omitted. Overall, it underscores the importance of attribution, authenticity, or anonymity in historical, literary, or scholarly contexts.