45~48 The California Gold Rush took place between 1848 and 1855. During this time gold was found in California. Over 300,000 people came to California to find gold and tried their best to become rich. Gold was first found in California by James Marshall at Sutter's Mill near the city of Coloma. James was building a sawmill for John Sutter when he found shiny gold in the river. He told John Sutter about his finding and they tried to keep it a secret. However, soon words got out and other people were rushing to California to find gold. Before the gold rush, there were only around 14,000 non-native Americans living in California. This soon changed. Around 6,000 people arrived in 1848 and in 1849 around 90,000 people arrived to hunt for gold. These people were called the Forty-niners. They came from all around the world. Some were Americans, but many came from places like China, Mexico, Europe, and Australia. All these thousands of miners needed supplies. Those supplies for a miner included mining tools , food, and some living supplies such as coffee, bacon, sugar, beans, bedding, a tent, lamp, and a kettle.  The store and business owners who sold supplies to the miners often became richer than the miners. They were able to sell things at very high prices and the miners were willing to pay. Whenever gold was found in a new place, miners would move in and make a mining camp. Sometimes these camps would soon grow into towns called boomtowns. The cities of San Francisco and Columbia are two examples of boomtowns during the gold rush.  A lot of boomtowns turned into abandoned ghost towns. When the gold ran out in an area, the miners would leave to find the next gold strike. The businesses there would leave too and soon the town would be empty and abandoned. One example of a gold rush ghost town is Bodie, California. Today it is a popular tourist spot. 
( )45. Which one will be the best title(題目) for this article?
(A) How People Found Gold In California
(B) The Growing Number of People During the Gold Rush
(C) A Simple History of the California Gold Rush
(D) The Gold Miners in California and Their Lives