Which is not an example involving refraction of light?

Question

Which is not an example involving refraction of light? — Exam MCQ

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D. Red colour of the setting Sun — The red appearance of the setting Sun is mainly due to stronger scattering of shorter wavelengths out of the direct sunlight.

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A. Formation of a rainbow

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B. Twinkling of stars

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C. Image formation by the human eye

Which is not an example involving refraction of light?

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