404.   Term of the County Executive
   (a)   The Executive shall hold office for a term beginning at noon on the first Monday of December next following the election of the Executive as provided in Section 403 of this Charter and ending at noon on the first Monday in December in the fourth year thereafter, or until a successor is qualified.
   (b)   No Executive may serve more than two consecutive terms.
   (c)   For purposes of the restriction imposed by subsection (b) of this section, an Executive who has been appointed to fill a vacancy and who has served two or more years of that term shall be considered to have served one full term. An appointed Executive who serves less than a two-year term shall be considered, solely for purposes of the subsection (b) restriction, not to have served a term as Executive.