Antero Is Often Very Irritable,but His Behaviour Is Unpredictable

Multiple Choice

Antero is often very irritable,but his behaviour is unpredictable.Some months he is very busy and agitated,and other months he feels very lazy and fatigued.Which disorder is most consistent with Antero's symptoms

A)  generalized anxiety disorder 
B)  dysthymic disorder 
C)  cyclothymic disorder 
D)  antisocial personality disorder