In the following sentence, four words or phrases have been printed in bold. One bold part in the sentence is not acceptable in Standard English. Pick up that part and mark its number. If there are no errors in the bold parts, mark (5) i.e. No error as the answer.

Combined(A) with the natural immunnity(B) that may still be lingering(C) among those infected in the Delta-charged second wave a few months ago, a large number of Indians may presently be protected(D) against serious illness and death from the virus.