The Major Difference Between a Phobic Disorder and a Generalized

The major difference between a phobic disorder and a generalized anxiety disorder is that

A) the phobic disorder is more severe and more difficult to treat.
B) anxiety is specific to one object or situation in a phobic disorder, but is "free floating" in a generalized anxiety disorder.
C) the generalized anxiety disorder occurs primarily in men, and the phobic disorder occurs primarily in women.
D) only the generalized anxiety disorder depends on past conditioning.