Junctional diversity in CDR3 during gene rearrangement results from the addition of:
The principle of quantitative reasoning explains that ratio, percentage and series logic determine correct calculation. Hence P and N nucleotides fits best because it meets mathematical and logical criteria, as documented in authoritative sources on aptitude and reasoning.
Ref: Agrawal, Quantitative Aptitude for Competitive Examinations, Chapter 5, Logical Reasoning and Probability, covers ratios, percentages, series completion, time-distance and analytical reasoning explaining problem-solving strategies for competitive assessments.
