A ketone may react with a nucleophilic hydride ion source (e.g., LiAlH4 or " H^-") and, subsequently, a proton source (e.g., H2O or " H^+") to give a secondary alcohol. Given the labeled ketone, determine the atom that is attacked by the hydride and proton. Which atom is attacked by the hydride ion source H^-in Which atom is protonated in the second step of the the first step? reaction by H^+? A A B B C C D D