This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pediatrics
A3 year old girl has problems with writing and spelling. Other intelligence is normal 
Select and explain. 
A. Specific writing disorder, B. Mental retardation, C. Dyslexia, D. Dysphonia
C: Dyslexia
Answer: C: Dyslexia 
Explanation: Dyslexia

Dyslexia - problem in reading, spelling and written expression
Intelligence is normal
Dyslexia is the most common type of learning disability.
Children with dyslexia have problem in reading, spelling and written expression.
The important clues to dyslexia in school age children include delayed language, trouble rhymic words, mispronunciation, hesitation,
work-finding difficulties and poor spellings with presence of letter reversal. Reading is slow, inaccurated and labored.