What inventory management metric do major bookstore chains typically use to determine if a new author's book will remain stocked on shelves after initial placement?

In the competitive world of literary retail, publishers and bookstores rely on sophisticated inventory management systems to maximize sales and minimize losses. From predictive analytics that forecast the next bestseller to just-in-time inventory systems that keep physical bookstores competitive with online giants, the business behind literature is as fascinating as the stories themselves. Test your knowledge about how the publishing industry tracks and manages their most valuable products!

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The 14-day velocity metric (sales per day during the first two weeks)
The Golden Ratio (shelf space occupied versus revenue generated)
The Barnes Algorithm (social media mentions divided by advance copies)
The Publisher's Guarantee (minimum sales threshold agreed upon before printing)