The author of Passage A mentions "a featherlight biscuit" and "a perfectly barbecued beef brisket" (lines 9-10) primarily to: A. contrast their deliciousness with the inferior taste of a dark and thick gumbo. B. offer additional examples of New Orleans cuisine that was, in the author's view, being corrupted. C. illustrate the types of authentic New Orleans food that tourists used to gravitate toward. D. provide examples of what the author views as real culinary successes, in contrast to dark gumbo.