下图所示仪器可用于实验室制备少量无水FeCl₃，仪器连接顺序正确的是

A．a-b-c-d-e-e-f-g-h

B．a-e-d-c-b-h-i-g

C．a-d-e-c-b-h-i-g

D．a-c-b-d-e-h-i-f