The correct circuit representation of the structure shown in the figure is

- A

- B

- C

- D

Solution & Step-by-step Explanation
1) Emitter and collector are n-type so the transistor will be n-p-n
∴ Options (3) and (4) are eliminated
2) The diode is connected between base and collector
Base is n-type
Collector is n⁺⁺type
Hence collector will be of n-type and base will be p-type.