Please help!
Choose the topic sentence that effectively introduces a paragraph about tourism in Las Vegas.
A. More than 41 million visitors each year drive the economy of Las Vegas.
B. In 2016, the population of Las Vegas was over 600,000
C. The average price of a home in Las Vegas is about 300,000.
D. Some people think that Las Vegas is the capital of Nevada, but that title actually belongs to Carson City.