64. Market effect: refers to the conditions achieved by an industry in terms of price, industry, cost, profit, product quality and variety, and technological progress under a certain market structure. Which of the following does not belong to the test market effect? ['Is the profit of the industry reasonable?', 'Is the expansion of industrial production capacity compatible with the growth of market demand?', "onsumers' personal taste.", 'Is there any waste in sales expenses and product modifications?']