Name That City Pt. 6

Population: 34,494
Nickname: The Richest Hill on Earth
History Fact: Due to the amount of copper ore located in area, this city exploded in population & wealth with the start of the electric age. Seriously, this city mined $23 million worth of ore in 1888 (that is over $600 million in today’s money). 
Political Fact: Due to the strength of miners union in this city, there was a strong Socialist presence. They elected a Socialist mayor in 1911 and 1913.
Geography Fact: The city is located on the U.S. Continental Divide
Infrastructure Fact: The city’s airport is called Bert Mooney Airport
Famous Citizen: Robert “Evel” Knievel

Apparently the free version of the widget that allows me to post quizzes only gives you 100 views per month. Yeah, that is stupid. So I will just post the multiple choice and you can message me with your answer and I will tell you if it is correct.

A. Coeur d’Alene, Idaho
B. Cheyenne, Wyoming
C. Butte, Montana
D. Rapid City, South Dakota