Below is a graph that shows the eating habits of a goldfish in an aquarium over a 2-day period. Most Active Least Actve- 9 A. M. 9 P. M 9 A. M. 9 P. M 9 A. M Monday Tuesday Which of the following conclusions is supported by the information on the above graph? OA. FIsh have a 6-hour circadian hythm. OB. Fish do not have internal responses to any natural cycles OC. Fish have a 24-hour circadian rhythm. OD. Fish have a 12-hour circadian rhythm