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: Medicine
DNA Amplification is done in: 
Select and explain. 
A. PCR, B. NASBA (Nucleic acid sequential based amplification), C. Ligase chain reactions, D. All
D: All
Answer: D: All 
Explanation: A i.e. PCR > B i.e. NASBA; C i.e. Ligase chain reaction DNA amplification techniques include - polymerase chain reaction (PCR), real time PCR, nucleic acid sequence based amplification (NASBA), ligase chain reaction (LCR) and Gap LCRQ. These are also k/a nucleic acid amplification tests (NAAT's)