Which of the Following Was Not One of the Methods

Which of the following was not one of the methods that Joseph G. McCoy employed to turn the cattle industry into a bonanza?

A) He built a new stockyard in Abilene.
B) He guaranteed the transport of his steers in railcars.
C) He earned kickbacks from the railroads.
D) He surveyed and shortened the Chisholm Trail.
E) He built giant stockyards in Chicago, where cattle dealers could raise steers cheaply and save large sums in transportation.