Which of the following is true regarding psychotropic treatment of autism spectrum disorders in adults?

a. Aripiprazole is the first line medication for treatment of "hand-flapping" in 15 year olds
b. Risperidone is the first line medication for treatment of "hand-flapping" in 15 year olds
c. The FDA has approved only one medication for comorbid anxiety disorders occurring in adults with ASD
d. The FDA has approved no psychotropics for the treatment of ASD in adults with autism spectrum disorders