221(g) - inperson Interview

Hi,

i was eligible for IW dropbox and submitted my docs in NewDelhi VAC, now I got 221(g) saying that come for in-person interview along with the 221g letter and passport…

My question is that, do I attend the interview only in New Delhi embassy or in any embassy like in Singapore (i am resident here and eligible for visa interview).

Could you please advise.