I took the originals and followed exactly what the letter said. However the official did ask me for any sort of proof I had of my marriage (since I did it based on 3 year marriage to a US citizen). She literally said it "since it is based on 3 year marriage may I have any supporting docs". I thankfully had the joint bank statement for 2021- that was all I took with me, she was fine with that. Ive read in this thread no additional docs are requested, I on the other hand had that "luck" and got asked for more.