There is information in the fourth paragraph to support which of these statements?
A.There are more lighthouses in the United States today than in any other single country.
B.There are more lighthouses in the United States now than there were in 1900.
C.There were more lighthouses in the United States in 1900 than there are elsewhere in the world today.
D. There are more functioning lighthouses in the United States today than there are lighthouses preserved as historical monuments.