The author's attitude toward the efforts to control senior executives would be ______.

A．diversify the business of the corporation
B．protect the interests of the shareholders
C．introduce effective reforms in business management
D．enhance the cooperation between the senior managers and the board directors

A．boardroom reforms have failed to achieve the desired result
B．outside board directors tend to be more independent
C．with a boardroom full of outsiders, senior managers work more conscientiously
D．cooperation between senior managers and board directors suffered from the reforms