The key detail here is the injury comeback story, a full year out with a shoulder injury, then a final at the Korea Open in 2015.
Ajay Jayaram fits this description. He returned from a long lay off due to a shoulder problem and fought his way to the final of the Korea Open Super Series in 2015, one of the notable Indian badminton comeback stories of that year.
Chetan Anand, Parupalli Kashyap and Sameer Verma are all recognized Indian shuttlers, but none of them match this specific injury comeback and Korea Open 2015 final, so options A, C and D are ruled out.