Dr Nakamura Thinks That His Client Might Be Suffering from Generalized

Dr. Nakamura thinks that his client might be suffering from generalized anxiety disorder. Which fact would rule out that diagnosis (make it impossible) ?

A) The client worries over both minor and major problems and constantly feels "on edge."
B) The client has experienced anxiety symptoms for almost exactly one month.
C) The client reports that the anxiety has interfered with her life activities.
D) The client's symptoms include physiological responses such as muscle tension.