Benchmarking effect: In a certain region, because consumers have a higher awareness of a certain brand, their prices tend to be significantly higher than other similar products in the same region and affect the price trend of similar products in the entire region. Which of the following are benchmarking effects? ['In a certain city, a major brand electrical appliance company specializes in special promotions every holiday. Other businesses have followed suit and surprisingly recruit customers.', 'The new smartwatches launched by a well-known brand have been well received. Although the price is high, they have repeatedly been out of stock. Smart watches from other brands have lowered their prices and competed for market share.', "As soon as the news that the city's first middle school was about to move to the high-tech zone was spreading, the house prices in the high-tech zone soared, and even the house prices in the adjacent Bayshu District rose by 30% to 40%.", "Lao Xu's online stores made tens of thousands of dollars in just six months. Friends came to learn from them and set up their own online stores in the same way. They made a lot of money."]