Please answer the following question: Read the article and select the best answer. Article: When people think of food in the United States, they think mostly of fast foods like hamburgers and hot dogs. In fact, in the U.S. cities like New York and Los Angeles, there are thousands of different kinds of restaurants with foods from all over the world. So if you like to try different foods, the United States is the place for you. The United States has people from all over the world, and they bring with them typical foods from their countries. You can eat tempura in Japanese restaurants, tacos in Mexican restaurants, paella in Spanish restaurants, pasta in Italian restaurants, and you can also eat America's most popular food, pizza. Yes, pizza! Pizza is from Italy, but today it is an important part of the U.S. menu. There are about 58,000 pizzerias in the United States--that's about 17% of all restaurants in the country, and the number is growing. The United States has eating places for all tastes--and all pockets. You can buy a hot dog on the street and pay one or two dollars. Or you can go to a four-star restaurant and pay $200 for a dinner Question: There are many different kinds of food in America because _ . Options: A: Americans have different eating habits B: cheap foods like hamburgers and hot dogs are less popular than before C: more and more tourists from other countries visit America D: Americans are from different countries of the world
A:
D