WHAT IS THE BEST TITLE OF THE PASSAGE

1. - NGAN HANG CAU HOI K10 HK1NH 2009 2010
NGAN HANG CAU HOI K10 HK1NH 2009 2010
1. What is the best title of the passage?A. Improvement int the Telephone and Telegraph.B. The History of Menlo ParkC. An Accidental InventionD. Thomac Edison’s Many Inventions.