Question ID:PT26 S2 Q9 Passage:Early pencil leads were made of solid graphite mined in Cumberland, in Britain.  Modern methods of manufacturing pencil leads from powdered graphite are the result of research sponsored by the government of France in the 1790s, when France was at war with Britain and thus had no access to Cumberland graphite. Stem:The information above most strongly supports which one of the following? Correct Answer Choice:BChoice A:The world's only deposit of graphite suitable for manufacture of pencils is in Cumberland, in Britain. Choice B:In the 1790s, France's government did not know of any accessible source of solid graphite appropriate to meet France's need for pencils. Choice C:One of the causes of war between France and Britain in the 1790s was the British government's attempt to limit the amount of Cumberland graphite being exported to France. Choice D:Government-sponsored research frequently gives rise to inventions that are of great benefit to society. Choice E:Even today, all pencil leads contain Cumberland graphite.