Although schizoid and avoidant personality disorders both display social withdrawal, those with avoidant personality disorder, unlike those with schizoid personality disorder, are angry all of the time, thus keeping people at a distance feel warmth to other people enjoy performing in public do not mind working in groups or teams

The correct answer is feel warmth to other people. 

While both avoidant and schizoid personality disorder (PD) involve social isolation, the cause of this social isolation differs. Individuals with schizoid PD isolate themselves because they truly prefer solitude, dislike others' company and feel emotionally cold towards others. On the other hand, individuals with avoidant PD are socially isolated from others not because they necessarily enjoy solitude and are feel cold towards others; individuals with avoidant PD avoid social interaction because they are socially anxious and worry that they will be rejected or criticized by others. 

What was the length to begin with?