According to the dsm-iv-tr classification scheme, what are the cluster c disorders?

In DSM-IV, personality disorders are being divided into three or namedly, into three clusters. They are cluster a, cluster b and cluster c. In the given question above, the cluster c disorders are about personality disorders in regards to being an obsessive compulsive, the feeling of being avoidant towards others and the feeling of being dependant. These characteristics are all about being anxious and fearful towards self, society and other factors that will trigger this characteristic.