[9급 지방직 영어 2008년 14번]

Dogs are considered by many to be "man's best friend." They are considered loyal, loving, and courageous members of the family. But at what cost?

(A) Added to this caring cost is the social cost of canine aggression. In one year, insurance companies in the United States paid 250 million dollars to victims of dog attacks.

(B) Every year, people in the United States spend more than five billion dollars on dog food and seven billion dollars on veterinary care for their canine pets.

(C) When other costs are included, experts estimate that aggressive dogs cost society one billion dollars a year.