Which menu pricing strategy is known to increase sales by approximately 8% according to Cornell University research?

Restaurant menu design is a fascinating blend of psychology and marketing strategy. Pricing tactics can significantly influence customer choices and spending habits. One particular pricing technique has been proven to increase sales by removing certain elements from price displays. Test your knowledge about this subtle yet powerful menu pricing strategy used by high-end restaurants around the world.

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Using prices that end in .99 (e.g., $19.99 instead of $20)
Removing currency symbols ($ or €) from the menu
Placing the most profitable items in the upper right corner of the menu
Using descriptive, sensory-rich language for each dish