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: Pathology
What is the inheritience pattern of myotonic dystrophy? 
Select and explain. 
A. Autosomal dominant, B. Autosomal recessive, C. X linked dominant, D. X linked recessive
A: Autosomal dominant
Answer: A: Autosomal dominant 
Explanation: Myotonic dystrophy is associated with CTG trinucleotide repeat mutation. It is inherited as autosomal dominant disorder.