__________

A．It should revise its mission statement constantly according to current circumstances.
B．It should not revise its mission statement.
C．It should revise its mission statement every few years with changes in the company’s environment.
D．The mission statement must be revised when it is no longer appropriate or has lost its importance.

A．Because his company wanted to make a productivity study
B．Because the sales of the company decreased a lot
C．Because he expected him to raise workers’ morale