What Was Joseph Glidden's Claim to Fame

What was Joseph Glidden's claim to fame?

A) He was a railroad man who reaped great profits from the early cattle drives and became the richest figure in the West.
B) He perfected the invention of barbed wire, which sparked "range wars" as well as the loss of Native American lands.
C) He became a renowned buffalo hunter, slaughtering thousands of the animals and making them more important to the United States than cattle.
D) He led the sheep ranchers against the cattlemen for control of western grazing lands but suffered a dramatic defeat.
E) He called for the regulation of bonanza farms because he believed they were unethical and harmed farmers.