The substitution effect means that after the price of a commodity rises, consumers switch to other commodities to meet their needs; when the price of a commodity falls, consumers will use that commodity to replace other commodities to meet demand. Based on the above definition, Which of the following statements are incorrect:. ['The price of goods is directly related to sales.', 'Consumers mostly choose products based on price rather than demand.', 'Multiple products can meet the same needs of consumers.', 'The price of goods and the relationship between supply and demand are dynamically changing.']