Which of the Following Statements Is True

Which of the following statements is true?

A) It has been shown that there is a strong relationship between separation anxiety disorder and being male, having a childhood characterized by a dysfunctional family, and an assortment of traumatic incidents throughout the lifespan (Carmassi, 2015) .
B) Approximately 40% of individuals with separation anxiety report that their symptoms began when they were adults (Milrod, 2015; Silove et al., 2015) .
C) It has been found that separation anxiety disorder (SAD) is comorbid only with obsessive-compulsive disorder (APA, 2013) .
D) all of the above