Which of the following descriptions about Baopingkou is correct?
A.
The Baopingkou or Bottle Neck Channel was designed to divert the water from Minjiang River to Chengdu Plain
B.
The Baopingkou was designed to divide the Minjing River into inner and outer streams.
C.
The Baopingkou was designed to drain out the silts in the river.
D.
The Baopingkou, together with the Yuzui and Feishayan, works quite well in diverting the flood water into the Chengdu Plain.