The main idea of the article is that researchers are excited about the discovery at Saqqara. Which key detail from the article supports the article's MAIN idea?

A)Over 100 ancient coffins and mummies have been discovered there. The Egyptian government announced this on November 14.

B) A necropolis is a cemetery from an ancient city. To find an untouched necropolis from this time period is a big deal, said Salima Ikram.

C) In November, Egyptian officials opened a coffin in front of reporters and photographers. They X-rayed the mummy inside.

D) They point out that this latest discovery of coffins is large. Although, they say that it is not that different from what has been found before.