WHAT_IS_THE_STATE_OF_PHAGE_CLONING_VECTOR_THAT_IS_USED_FOR_THE_CONSTRUCTION_OF_LIBRARY??$

• A. Packaged phage
• B. Unpackaged phage
• C. Packaged and unpackaged phage
• D. Packaged and unpackaged phage are used but unpackaged phage is favored