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
Normal child has dysfluency of speech between 
Select and explain. 
A. 2 and 4 years, B. 4 and 6 years, C. 6 and 8 years, D. 8 and 10 years
A: 2 and 4 years
Answer: A: 2 and 4 years 
Explanation: Stuttering is a defect in speech characterized by hesitation or spasmodic repetition of some syllables with pauses. There is difficulty in pronouncing the initial consonants caused by spasm of lingual and palatal muscles. It can affect up to 5% of children between 2 and 5 years of age. In this age group, parents should be reassured as most of them show resolution. If it persists beyond or appears after 5 years of age, opinion of psychologist and speech therapist should be sought