Correct option is D
Students with Attention Deficit Hyperactivity Disorder (ADHD) typically exhibit difficulties in maintaining attention for extended periods, are often restless and fidgety, and get easily distracted. These characteristics interfere with their ability to focus on tasks. Contrary to this, having a long and sustained attention span is not a characteristic of students with ADHD. This statement is incorrect in the context of ADHD, as one of the key challenges for these students is the inability to maintain prolonged attention on tasks.