Susan Has Seen a Shark Attack Someone; She Has Also

Multiple Choice

Susan has seen a shark attack someone; she has also seen a dog attack someone. One reason why she is more likely to develop a phobia of sharks than a phobia of dogs is that

A) dogs have been dangerous to humans for a longer time than sharks have been.
B) attacks by sharks are predictable while dog attacks are not.
C) she has probably had a number of safe experiences with dogs.
D) more people are injured by sharks than by dogs.