The author of the passage refers to Nellie Barnes' study most probably in order to do which of the following? A. Point out a weakness common to early stylistic studies of most oral literature B. Illustrate a research approach commonly taken by scholars of Native American oral literature C. Provide an example of an anomalous approach to the study of Native American oral traditions D. Contrast the assumptions guiding early research with those guiding study of Native American oral literature today E. Draw attention to an area of research that has been increasingly neglected by scholars in recent years