By "patristic", the author means ______.

A．introduction of mundane matters in religious plays
B．presentation of erudite material
C．use of contemporary introduction of religious themes in the early days
D．application of the medieval plays

A．justify his comparison with Steinbeck
B．present a point of view which attack the thought of the second paragraph
C．point out the anachronisms in the play
D．discuss the works of Chaucer