Which of the Following Statements Is True About Social Phobia

Which of the following statements is true about social phobia?

A) Social phobia is relatively common, with a lifetime prevalence of about 3 percent in the United States.
B) Social phobia tends to develop in either late adolescence or early adulthood.
C) Over 90 percent of adults with social phobia report severe childhood trauma that contributed to their symptoms.
D) Social phobia often co-occurs with mood disorders, other anxiety disorders, and avoidant personality disorder.