Which of these describes how some premium brands have utilized the 'Golden Ratio Pricing Strategy' in their product lines?

In the world of retail mathematics, pricing strategies often incorporate mathematical principles to optimize consumer psychology and revenue. The Golden Ratio (approximately 1.618), known for its aesthetic properties in art and architecture, has also been explored in product pricing strategies. This poll tests your knowledge of how this mathematical concept has been applied in retail pricing models.

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Setting the price of premium products at approximately 1.618 times the price of their standard offerings
Creating product dimensions (height, width, depth) that conform to the Golden Ratio for optimal visual appeal
Ensuring that exactly 61.8% of products in a line are premium-priced while 38.2% are budget options
Scheduling price changes to occur at intervals determined by the Fibonacci sequence (related to the Golden Ratio)