The ketone shown is treated with each reagent below, followed by aqueous work-up where needed. Select the reagent(s) that give a tertiary alcohol (an alcohol whose carbinol carbon is bonded to three other carbon atoms).

3-Methylbutan-2-one has a ketone carbonyl carbon bearing two carbon substituents. Adding a carbon nucleophile (methylmagnesium bromide, phenyllithium, or cyanide in the cyanohydrin reaction) creates a carbon bearing OH and three carbon groups, a tertiary alcohol. Sodium borohydride delivers hydride, giving a secondary alcohol.