A ray of light originates in medium A and is incident upon medium B.For which one of the following pairs of indices of refraction for A and B is total internal reflection not possible? 
Definitions:
Cytokinesis
The method by which a single eukaryotic cell's cytoplasm is split into two, resulting in the formation of two offspring cells during cell division.
Telophase
The final stage of cell division, in which the chromosomes de-condense, nuclear envelopes reform, and cytokinesis usually begins.
Spindle Microtubules
Filaments composed of tubulin that form the spindle apparatus during cell division, playing a vital role in the separation of chromosomes.
Kinetechores
Kinetechores refer to protein complexes on chromatids where the spindle fibers attach during cell division, playing a crucial role in chromosome movement.
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