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。 If your birthday is coming, what gifts will your parents buy for you? It’s not easy for Chinese parents to choose birthday gifts for their children. Many American parents also have the same problem. But luckily they have American Girl — an American company. It's famous for its beautiful dolls ( 玩具娃娃 ). Though there are many famous dolls in the world, American Girl dolls are girls’ favorite birthday gifts. What makes American Girl dolls so popular with girls? The secret is in their matching ( 相配的 )hair, skin, eye color and clothing. That is to say, there are different kinds of dolls for people to choose from. And the dolls look like their owners. The company hopes their dolls can make girls understand that it’s OK to be different from others. The company gives each doll a name and a special background ( 背景 ). It also invites some writers to write books about these dolls. The stories are mainly about American history in different periods. So girls can get a lot of fun and also learn something about history.