When Bitzer arrives at Sleary's circus to apprehend Tom Gradgrind Jr., Dickens describes his "colourless face" as "more colourless than ever." Bitzer's complexion:
A) Shows readers that he spends very little time outdoors.
B) Indicates that he does not really want to apprehend Tom Gradgrind Jr.
C) Demonstrates how frightened he is to confront Tom Gradgrind Jr.
D) Represents symbolically his lack of emotion and imagination.