阅读下列短文，从每题所给的四个选项（A, B, C, D）中选出最佳选项。
In 1826, a Frenchman named Niepce needed pictures for his business. But he was not a good artist. So he invented a very simple camera. He put it in a window of his house and took a picture of his garden. That was the first photo.
The next important date in the history of photography was 1837. That year, Daguerre, another Frenchman, took a picture of his reading room. He used a new kind of camera in a different way. Daguerre invented the Daguerreotype process, which started the history of human flat image. In his picture you could see everything very clearly, even the smallest thing. This kind of photo was called a Daguerreotype.
Soon, other people began to use Daguerre’s way. Travelers brought back wonderful photos from all around the world. People took pictures of famous buildings, cities and mountains.
In about 1840, photography was developed. Then photographers could take pictures of people and moving things, which was not simple. The photographers had to carry a lot of film and other machines. But this did not stop them, for example, some in the United States worked so hard. Mathew Brady was a famous American photographer. He took many pictures of great people. The pictures were unusual because they were very lifelike.
Photographers also became one kind of art by the end of the 19th century. Some photos were not j