What Is the Major Difference Between a Phobic Disorder and a Generalized

What is the major difference between a phobic disorder and a generalized anxiety disorder

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