B. He was an unethical man.
The lines from The Canterbury Tales about the pardoner describes how he seems to have lots of money, enough to buy a hat with nice material with a nice fat wallet of pardons. This suggests that the pardoner is corrupt because in the time period Chaucer is writing, one could sell "pardons." You can conclude that the pardoner makes his money from selling holy forgiveness in the form of "pardons."
