Dinosaurs survived for at least 700,000 years after meteorite collision discuss how the research in this article shows how new technology and experimental methods can lead to changes in theories.

While you didn't provide any article. New research on the same topic as well as better technology and experimental methods for any topic in science can always help and be of help when trying to find out the finer details and exactly see how a theory should be updated and what exactly needs to be corrected in a certain hypothesis and/or theory. 

Ibelieve its b but u might have to