Task: Question Answering
Input (English): Question: The reaction conditions for the preparation of 2-methyl-2-methoxypropan-1-ol from 2,2-dimethyloxirane are: 
 Options:  <1> Methanol in acid medium. <2> Lithium aluminum hydride in methanol. <3> Methylmagnesium bromide and subsequent hydrolysis. <4> Sodium methoxide in methanol. <5> Triphenylphosphine in methanol.
Output (English): 1