This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Growth and development, Subject name: Pediatrics
A 14 year old boy has difficulty in expressing himself in writing and making frequent spelling mistakes, does not follow instruction and cannot wait for his turn while playing a game. He is likely to be suffering from 
Select and explain. 
A. Mental retardation, B. Lack of interest in studies, C. Specific learning disability, D. Examination anxiety
C: Specific learning disability
Answer: C: Specific learning disability 
Explanation: The Child may suffer from Specific learning disability If one find difficulty in expressing himself in writing and making frequent spelling mistakes, does not follow instruction and cannot wait for his turn while playing a game. Reference: GHAI Essential pediatrics, 8th edition