Which of the following best completes the passage below?
The movie production company's estimate of financial losses due to the illegal download of movies cannot be correct, because it's a measure of the wrong phenomenon. Most of illegal downloading of movies is done exclusively by people who have a passing interest in the movies but no intention of buying them, as they appear to assume. Thus, the loss to the industry is
【选项】
actually equal to the difference between this year's sales and a particular previous year's sales, adjusted for inflation
选项是否正确？