79. Deduce the identity of the compound from the data provided. C5H10O2: IR (cm-1): 3380 (br, s). 1H-NMR (ppm): 1.30 (s, 3H), 3.50 (t, 1H), 3.64 (d, 2H),4.38 (d, 2H), 4.52 (d, 2H). 13C-NMR (ppm): 20.72 (q), 40.78 (t), 67.59 (t), 79.74 (t).
(A) (2,3-dimethyloxiran-2-yl)methanol 
(B) 1-(2-methyloxiran-2-yl)ethanol 
(C) 1-(oxetan-3-yl)ethanol 
(D) (3-methyloxetan-3-yl)methanol 
(E) (tetrahydrofuran-2-yl)methanol