—what do you think of the matter?

—Don’t you remember I have already ________ that it was troublesome?

A．made it clear

B．made clear

C．took it for granted

D．made sure

从整个的管理目标出发，对信息进行系统、连续的收集，为全局管理目标服务，这种信息收集的方法是（）。