The recent discovery that many large fish contain mercury, which can cause neurological damage in humans, has apparently had little effect on shoppers. Few shoppers plan to change their fish-buying habits after hearing about the discovery. Nonetheless, sales of large fish in grocery stores fell sharply in November, a week after the report came out.
Which of the following, if true, best explains the reason for the apparent discrepancy described above?
A. In November, many grocery store fishmongers stopped buying and selling large fish because they feared being held liable for their customers' potential illnesses.
B. Because of an increase in warnings about the safety of the food supply, shoppers in November took the warning regarding large fish less seriously.
C. The discovery was publicized in various media, including radio, television, and many blogs.
D. The researchers who made the discovery did not study small fish, though it is likely that small fish also contain trace amounts of mercury.
E. Public health officials do not believe that large fish are dangerous when consumed in small quantities, which would limit the amount of mercury consumed.