3.
What compound is formed when 2,2-dimethyloxirane is treated with ethanol containing a trace of HCl?
(A)2-ethoxy-2-methyl-1 -propanol
(B)1 -ethoxy-2-methyl-2-propanol
(C) 2-ethoxy-2-methyl-2-propanol
(D)2-ethoxy-1 -butanol
(E)1 -ethoxy-2-butanol
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