nayana-c1.867c992ae9100904cc61c84591adf0f8f863e0387e30f0d0dbc86640e9f50a1a.en.train.68752

The task

Which of the following references is related to the introduction of quantum mechanics? A. [1] Griffiths, D. J., Introduction to quantum mechanics (Pearson Prentice Hall, 2005). B. [2] Rabi, I. I., Millman, S., Kusch, P., & Zacharias, J. R., The molecular beam resonance method for measuring nuclear magnetic moments. Phys. Rev. 55, 526-535 (1939). C. [3] Ramsey, N., Molecular beams (Clarendon Press, Oxford, 1985). D. [4] Dicke, R. H., Coherence in spontaneous radiation processes. Phys. Rev. 93, 99-110 (1954). Return only the single uppercase letter of the correct option.