"Voting security" means any security presently entitling the owner or holder thereof to vote for the election of directors of a company. A specified percentage of the outstanding voting securities of a company means such amount of its outstanding voting securities as entitles the holder or holders thereof to cast said specified percentage of the aggregate votes which the holders of all the outstanding voting securities of such company are entitled to cast. The vote of a majority of the outstanding voting securities of a company means the vote, at the annual or a special meeting of the security holders of such company duly called,

           (A) of 67 per centum or more of the voting securities present at such meeting, if the holders of more than 50 per centum of the outstanding voting securities of such company are present or represented by proxy; or

          (B) of more than 50 per centum of the outstanding voting securities of such company, whichever is the less.