Why are Windows line breaks larger than Unix line breaks?

So I created two files, each with 127,955 lines and 24 random characters per line. As far as text the two files were completely identical. However one file had Unix line breaks and the other had Windows line breaks. The file with Unix line breaks was 3,124 KB, while the file with Windows line breaks was 3,249 KB. There were no other differences between the files so I have to assume that for some reason Windows line breaks take up more space. Any idea why?

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