Which of the following BEST summarizes the differences between Generalized Anxiety Disorder (GAD) and Panic Disorder (PD)?
a. PD involves brief sudden experiences of anxiety, GAD involves long-term experiences of anxiety
b. PD is caused by a lack of serotonin, GAD is caused by a lack of dopmine
c. GAD is caused by a lack of serotonin, PD is caused by a lack of dopamine
d. PD involves prolonged experiences of anxiety, GAD involves brief experiences of anxiety
