An unknown compound X has the empirical formula C3H6O and a molecular ion in its mass spectrum at 116. Compound X shows no IR absorption at 3200-3600 cm-1 but shows a peak at 1700 cm-1. The 1H NMR spectral data of X is shown below. What is the structure of compound X? 
A) I
B) II
C) III
D) IV
Correct Answer:
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