(a) Any vacancy occurring in the board of directors and any directorship to be filled by reason of an increase in the number of directors may be filled by the affirmative vote of a majority of the remaining directors, though less than a quorum of the board of directors, unless the governing documents of the nonprofit corporation provide that a vacancy or directorship so created shall be filled in some other manner, in which case the provision shall control.
(b) A director elected or appointed, as the case may be, to fill a vacancy shall be elected or appointed for the unexpired term of his or her predecessor in office.
(c) Any directorship to be filled by reason of an increase in the number of directors may be filled by the board of directors for a term of office continuing only until the next election of directors.