I think I have the correct answer but I think there's something going on with the -CH and -OH bond that I'm not understanding. my question is why does the -CH bond have a higher ppm the the -OH bond? other than that the rest makes sense I think. please double check and explain? thank you!

2. A molecule with the molecular formula C4H8O2 gives the following spectra. What is the molecule? For full credit: a. Explain how the 1H spectrum matches your answer. (The N+1 rule works for this molecule.) b. Explain how the IR spectrum matches your answer. 1H speci IR spectrum