The year is 1249 and Aryeh is headed into a large market in search of some silk for a gown he would like to have made for his wife. The traders in the stalls sneer at Aryeh, but he ignores them. He finds a seller who has beautiful silk fabric for sale. As he approaches the stall, the seller calls out, "I don’t sell to Jews." How did the seller MOST likely know that Aryeh was Jewish? A. Jews had much darker skin than most European residents. B. It was obvious that Aryeh was wealthier than anyone else there. C. Jews were never found in the area during the 13th century. D. Jews of his day were required to wear distinctive clothing.