Board Thread:Fun and Games/@comment-117.195.29.31-20141009045832/@comment-117.195.11.161-20141229040123

The answer to my question is wrong it is C. the Aon center had a large portion of the roof fall because it was made out of marble a weak material. It was replaced by a regular building roof. But John hancock center also recieves a honourable mention as it had problems as well.