It can be inferred from the passage that the author would most probably agree with which one of the following statements about brevetoxin? A. It may have been responsible for the dolphins' skin lesions but could not have contributed to the bacterial infection. B. It forms more easily when both P. brevis and synthetic pollutants are present in the environment simultaneously. C. It damages liver function and immune system responses in bottlenose dolphins but may not have triggered this particular dolphin die-off. D. It is unlikely to be among the factors that contributed to the dolphin die-off. E. It is unlikely to have caused the die-off because it was not present in the dolphins' environment when the die-off began.