Item A: Article 44 of the Company Law stipulates that a limited liability company shall have a board of directors with 3 to 13 members; Except as otherwise provided in Article 50 of this Law. In other words, a limited company has a board of directors, with the exception of Article 50.
Item B: Article 108 of the Company Law stipulates that a joint stock limited company shall have a board of directors with 5 to 19 members.
Accordingly, a joint-stock company must set up a board of directors.
Item C: Article 67 of the Company Law stipulates that a wholly state-owned company shall set up a board of directors and exercise its functions and powers in accordance with the provisions of Articles 46 and 66 of this Law. The term of office of directors shall not exceed 3 years. There should be staff representatives among the board members.
Accordingly, a wholly state-owned company must set up a board of directors.
Item D: Article 50 of the Company Law stipulates that a limited liability company with fewer shareholders or a smaller scale may have an executive director instead of a board of directors. The executive director may concurrently serve as the company manager.
So, choose item D.