Which of the Following Is the Sequence of Events,from Beginning

Multiple Choice

Which of the following is the sequence of events,from beginning to end,for production of a DR image using direct conversion detectors?
1) Image matrix is formed in computer.
2) Charge is briefly stored in TFT array.
3) Exit radiation is converted to electrical charge.
4) Electronic signal goes to ADC.

A) 3, 4, 1, 2
B) 4, 2, 3, 1
C) 2, 4, 3, 1
D) 3, 2, 4, 1