(a) The number of directors of a corporation shall be at least three. The number of directors shall be fixed by the bylaws, except that the number constituting the initial board of directors shall be fixed by the articles of incorporation.
(b) The number of directors may be increased or decreased from time to time by amendment to the bylaws, but a decrease may not have the effect of shortening the term of an incumbent director.
(c) In the absence of a bylaw fixing the number of directors, the number shall be the same as that stated in the articles of incorporation.