74. Propose a structure for a compound C5H10O that fit the following 1H-NMR data: δ 0.92 (3H, t, J = 7 Hz), 1.20 (6H, s), 1.50 (2H, q, J = 7 Hz), 1.64 (1H, br s).
(A) isopentanol
(B) 2-methyl-2-butanol
(C) isopropyl methyl ketone
(D) 2-methyl-1-butanol
(E) ethyl propyl ether
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