A 29-year-old male client completed the Adult ADHD Self-Report Scale Symptom Checklist. He answered "sometimes, often, or very often" to four of the six questions in Part A. What does this result indicate?

The client does not have symptoms of ADHD.

The client has symptoms consistent with ADHD, but he was not diagnosed as a child and therefore cannot be diagnosed as an adult.

The patient has symptoms highly consistent with ADHD in adults and further investigation is warranted.

The client is malingering.