Unfair competition: An operator violates the provisions of the Unfair Competition Law, harms the legitimate rights and interests of other operators, and disrupts the socio-economic order. The so-called operator refers to a legal person engaged in a commodity business or for-profit services, other economic organizations, and personal. According to the above definition, which of the following is unfair competition acts? ['An underground factory puts the inferior wine produced under the trademark of a famous brand and sells it.', 'A factory adopts advanced technology to reduce the cost and thus the selling price to occupy a favorable market position.', 'Distributors only sell locally produced plum beer in accordance with local government requirements.', "Use a name, packaging, and decoration similar to a well-known product, causing confusion with other people's well-known products, and making buyers mistakenly believe that it is a well-known product."]