This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Child Psychiatry, Subject name: Psychiatry
A child finds difficulty to spell and read, otherwise his IQ is normal, interacts well with parents and friends. Vision is normal. Most probable diagnosis of the condition is: 
Select and explain. 
A. ADHD, B. Dyslexia, C. Autism, D. Asperger syndrome
B: Dyslexia
Answer: B: Dyslexia 
Explanation: The history of difficulty in reading and spelling mistakes in presence of normal IQ is suggestive of learning disorders (specific learning disability).