Which of the following is not an efficient synthesis of 2-methyl-2-pentanol?
a) Grignard reaction of 1-butene with methylmagnesium bromide followed by acid hydrolysis
b) Hydroboration-oxidation of 2-methyl-1-pentene
c) Reduction of 2-methyl-2-pentanone with lithium aluminum hydride
d) Hydration of 3-methyl-2-butene in the presence of sulfuric acid
