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: Biochemistry
In gene cloning, largest fragment can be incorporated in - 
Select and explain. 
A. Plasmid, B. Bacteriophage, C. Cosmid, D. Retrovirus
C: Cosmid
Answer: C: Cosmid 
Explanation: None