Use this political cartoon to answer the question.

A cartoon shows a group men who look like trains in the U.S. Senate chamber. They all wear suits and have smoke pouring out of their heads, which look like smokestacks. A train-man wearing a dollar sign stands in the foreground and delivers a speech while stepping on a document that reads,

Beck's bill to prevent members of congress from accepting fees from subsidized railroads.

In this Thomas Nast cartoon depicting U.S. senators as trains, what does he suggest about the relationship between railroad companies and the U.S. Senate?

A.
The Senate is hostile to the railroad companies.

B.
The Senate is controlled by the railroad companies.

C.
The Senate should do more to support railroad companies.

D.
The Senate should be admired for supporting railroad companies.