Observe the given figure and answer the following questions:

Arrange the given steps for purification of air, in proper sequence. 

A. Attachment of electrons to dust particles giving them a net negative charge.
B. Passage of dirty air with particulate matter at low velocity.
C. Attraction of charged dust particles to grounded collection plate.
D. Release of electrons from electrode wires at several thousand volts.

Choose the correct answer from the options given below:

B, D, A, C

The correct answer is Option (2) → B, D, A, C