确定哪些岗位需要进行评价，这是进行工作评价必须要做的第一项工作，指的是工作评价流程的哪一项工作：

A．Yes, but you have to organize a meeting at first
B．No, you should never use it
C．Yes, just walk in and use it
D．No, you should book the room in advance.