Suppose you are a researcher who is studying Pacific White-sided dolphins (Lagenorynchus obliquidens). While studying a captive group of dolphins at an aquarium, you notice a strange tendency for the dolphins to stay close to the surface shortly after being fed. You are intrigued, and after looking for more information, you learn that some species of dolphins will sometimes stay close to the surface when they have gastrointestinal gas. Dolphins may normally feed on many species of fish in the wild, but you notice that the dolphins tend to stay close to the surface after being fed species "A", but not species "B" or "C". a. What hypothesis might you devise based on this observation? b. What experiment might you design to test your hypothesis?