A board of directors is most likely to protect the shareholders’ interests when:（）

A. the board requires that management attend all meetings.

B. the board includes representatives from the firm’s key customers and suppliers.

C. one individual can be identified as the leading board member from outside the firm.

法人或其他组织的法定代表人、负责人超越权限订立的合同，除相对人知道或应当知道其超越权限以外，该代表行为( )。

A．有
B．无效
C．效力待定
D．自始无效