According to Democratic leaders opinion, timetables for the withdrawal from Iraq can______

According to Democratic leaders opinion, timetables for the withdrawal from Iraq can______.

A．stop the President from putting too much fund into Iraqi war

B．make Iraqi leaders more responsible for the security in their own country

C．stimulate the President to pursue an open-ended commitment of American forces

D．boost morale for American troops in Iraq

请帮忙给出正确答案和分析，谢谢！