Question

Choose the revision that corrects any punctuation errors in the sentence below. If no change is needed, select "No correction is necessary."
Yes they had at long last found it-the tomb of Tutankhamun the boy king of Egypt who had ruled a powerful nation over 3000 years before a tomb full of priceless treasure.

A) Yes, they had at long last found it, the tomb of Tutankhamun—the boy king of Egypt who had ruled a powerful nation over 3000 years before—full of priceless treasure.
B) Yes they had at long last found it. The tomb of Tutankhamun—the boy king of Egypt who had ruled a powerful nation over 3000 years before a tomb, full of priceless treasure.
C) Yes, they had at long last found it—the tomb of Tutankhamun—the boy king of Egypt who had ruled a powerful nation over 3000 years before a tomb, full of priceless treasure.
D) No correction is necessary.

Answer 1

I'm pretty sure that the answer is A.