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: Microbiology
The segment of DNA between chromosomal and extrachromosomal DNA molecules within the cells are 
Select and explain. 
A. Transposons, B. Cosmid, C. Plasmid, D. Episomes
A: Transposons
Answer: A: Transposons 
Explanation: None