A publisher believes that: processing costs have increased by 10% to 12% in the past 5 years; raw material costs have increased by 10% to 13%, and sales and advertising costs have increased by more than 10%. Adding all these together, the total cost has increased at least This is only for large publishers. If it is a small publisher, the total cost has increased by at least 40%. It can be seen that the increase in book prices is mainly caused by the increase in costs, so I oppose increasing the copyright income of writers. The most appropriate evaluation of the above argument is. ['Failure to provide specific evidence of increased processing costs.', 'Ignoring other reasons for rising book prices.', 'Miscalculated the proportion of total cost increase.', 'Ignore statistics for medium-sized publishers.']