A 5-Year-Old Girl Is Brought to the Physician Because Her

A 5-year-old girl is brought to the physician because her mother has found her to be inattentive at home and has received multiple complaints from her teachers at school. She does not complete her assignments and does not listen to her teachers' instructions. She refuses to talk to her parents or peers. Her mother says, "She ignores everything I say to her!" She prefers playing alone, and her mother reports that she likes playing with 5 red toy cars, repeatedly arranging them in a straight line. She avoids eye contact with her mother and the physician throughout the visit. Physical and neurological examination shows no abnormalities. Which of the following is the most likely diagnosis?

A) Adjustment disorder
B) Autism spectrum disorder
C) Language disorder
D) Normal variation in development
E) Selective mutism
F) Social anxiety disorder
G) Social (pragmatic) communication disorder