The author of the passage would probably agree with which of the following about Povinelli and Eddy's study? A. The chimpanzees in the study thought that the blindfolded human was able to see them. B. The study was flawed because it put chimpanzees in the unnatural position of begging for food. C. The chimpanzees in the study were confused by the body orientation of the human subjects. D. It would be difficult for Povinelli and Eddy to repeat the results of their study even with the same experimental conditions. E. It is likely that the chimpanzees in the study thought that both humans were unable to see them.