Which retail store holds the Guinness World Record for being the 'Highest Altitude Commercial Outlet' in the world?

Think you know about extreme retail? Test your knowledge about the world record for the most challenging retail environment! The world of retail isn't just about convenience - some stores push the boundaries of accessibility and customer experience to extraordinary limits. This question explores a famous retail location that holds a Guinness World Record for its extreme location, challenging both supply chain logistics and customer determination.

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The North Face store at Everest Base Camp, Nepal (17,598 ft)
Khardung La Pass convenience store, Ladakh, India (18,380 ft)
Pheriche Trading Post near Mt. Everest, Nepal (14,340 ft)
Lhasa Namco Boutique, Tibet Autonomous Region, China (18,519 ft)