A Child's Distracting Behaviors Occur Only in a School Setting

A child's distracting behaviors occur only in a school setting and include failure to follow instructions and finish work,answering questions before they have been completed,and a lot of seat squirming and fidgeting.Could ADHD be a diagnosis of this child's behavior?

A) Yes,it could be a diagnosis.
B) No,the child's symptoms started at too young an age.
C) No,the child's symptoms occur in only one setting.
D) Yes,it could be,but only if the fidgeting is distracting to others.