A. Chaucer copied French and Italian style, whereas Langland did not.
B. Chaucer and Langland wrote in different dialects.
C. Most of Chaucers poetry was for a secular court audience, whereas Langlands was didactic, teaching a moral lesson.
D. Langland wrote only about aristocratic characters that were similar to Arthurian legends, whereas Chaucer wrote about lower social classes.