以下哪一项描述了 Google 有关制作有效广告素材的 ABCD 原则？

The ABCD framework for effective Google Ads creative stands for Audience, Branding, Creative, and Direction. It represents a set of research-backed guidelines, not rigid rules, that help advertisers develop high-performing ad creatives. These guidelines are derived from extensive data analysis of successful campaigns, offering actionable insights and best practices rather than strict mandates. While design is a component of "Creative," the framework itself is broader and grounded in data, making "research-backed creative guidelines" the most accurate description. It's not just about inspiration or rules, but about informed guidance.