单选题：根据下面资料，回答题： In the 1960s the West Coast became an important

根据下面资料，回答题：
In the 1960s the West Coast became an important center for rock music. Los Angeles andSouthern California are famous for sunshine and surfing. There, a quieter kind of rock called surfrock became famous. The Beach Boys sang songs like "Surfin' U. S. A", "California Girls" and"Fun, Fun, Fun". These'songs made people dream about the good life in California.
San Francisco was a center for young people and rock music in the late 1960s. This was thetime of the Vietnam War, student protest, hippies, and drugs. Hippies talked about love andpeace. They wore brightly colored clothes and had long hair. They listened to rock and folk-rockmusic.
Drugs were a serious problem during that time. The deaths of three young rock stars, Janis Jopiing, Jim Morrison and the great guitar player Jimi Hendrix were all related to drugs.
Not all of the rock musicians came from California or the U. S. A.. That was the time of thegreat British rock groups like the Beatles and the Rolling Stones. British rock musicians had a veryimportant place in the rock music of the 1960s in America.
Another kind of softer rock music was created by the singers. Singers like Joni Mitchell andJames Taylor wrote their own lyrics and their own music. Their songs were about love and friendship, good and bad times.
In the 1960s big rock concerts were very welcomed by everyone. The most famous concertwas Woodstock. In 1969 in New York State, a million young people came together to hear therock stars. This peaceful Woodstock concert was the most important musical event of the 1960s.
After World War II a great number of black people moved from the South to the big industrialcities like New York, Detroit, and Philadelphia. Many black people lived in poor parts of the city such as Harlem in New York. Musicians wrote and sang about life in the big cities. Life was difficult but music and dancing made it a little easier.
Popular black music had a strong beat for dancing. At first this music was called rhythm and blues. The 1960s called it soul.
In Detroit, a black musician named Berry Gordy set up an all black record company. It was called Motown. Motown or motor town is another name for Detroit, where cars are made. Most ofthe famous soul musicians like the Supremes, the Temptations, and the Jackson Five recorded with Motown.
Where in the United States did pop music first emerge? A．The West.
B．New York.
C．The South.
D．San Francisco.