3-methyl-2-hexanol was prepared by reacting an alkene with either hydroboration-oxidation or oxymercuration-reduction. Draw the structure of the alkene that was used to prepare the alcohol in highest yield. . You do not have to consider stereochemistry. . You do not have to explicitly draw H atoms. . Indicate the method of preparation by drawing either BH3 (for hydroboration-oxidation). or Hg (for oxymercuration-reduction). in a separate sketcher. . If there is more than one alkene that can be used for a given method. draw all of them . If either hydroboration-oxidation or oxymercuration-reduction can be used. just give the structures for one method . Separate structures with + signs from the dropdown menu.