According to the passage, many people initially thought that E. L. Drake had made a mistake by ______.

A．Gold ore.
B．Sstolen money.
C．Whale oil.
D．Crude oil.

A．To indicate the extent of United States mineral wealth.
B．To argue that gold was more valuable than oil.
C．To describe the mood when oil was first discovered.
D．To explain the need for an increased supply of gold.