A Major Factor That Weakened Standard Oil's Monopoly Power Prior

Multiple Choice

A major factor that weakened Standard Oil's monopoly power prior to being broken up by the Supreme Court in 1911 was

A) the discovery and development of the Texas and Oklahoma oil fields.
B) an increase in the demand for oil brought about by the increase in automobile ownership.
C) the government regulation of Standard Oil as a natural monopoly.
D) the increased use of ethanol, which is made from corn, as a source of fuel.
E) the significant losses incurred while searching and drilling for oil.