Question: Which of the following lists the electromagnetic spectral regions in order of decreasing wavelength?
A: ultraviolet, visible, infrared, X-ray
B: X-ray, visible, ultraviolet, infrared
C: X-ray, ultraviolet, visible, infrared
D: infrared, visible, ultraviolet, X-ray
Please eliminate two incorrect options first, then think it step by step and choose the most proper one option. Respond with more than 900 words.
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