中国古代政治制度自秦汉以来就采取了集权于上而分权于下的方式，以内侍、贵戚监督和逐渐代替重臣，以近臣演变为重臣，以辅佐皇帝办事的部门发展为正式的国家机关，取消或削减原来国家机关的实权并逐渐架空之。以下机构的设置体现这种趋势的是

A．中朝内阁军机处

B．御史府内阁军机处

C．中朝御史府军机处

D．尚书台都察院内阁

Had I known about this computer program, a huge amount of time and energy _____. [ ]

A. would have been saved

B. had been saved

C. will be saved

D. was saved