Claude Had an Unpleasant Experience During His Last Visit to Dallas

Claude had an unpleasant experience during his last visit to Dallas, Texas. He was approached by two men with strong Texas accents who wielded a sharp knife, roughed him up, cracked a rib, and stole all his money. Ever since Claude was mugged, he has taken an instant dislike to anyone who speaks with a Texas twang. Claude's negative attitude toward Texas accents is most probably a result of

A) instrumental conditioning.
B) attitude accessibility.
C) classical conditioning.
D) cognitive dissonance reduction.