Answer the following question: Read the article and select the best answer. Article: Barry and Kim are twin brother and sister. But they like different sports. Barry likes soccer. He is in the school soccer club, and he plays soccer every day. He has 9 soccer balls in his bookcase. He also likes volleyball. He has 2 white volleyballs and 2 blue volleyballs. But Kim doesn't like soccer or volleyball. She likes tennis. Tennis is interesting. She is in the school tennis club and she plays tennis every day. She has 7 tennis balls and 2 tennis rackets in her room. She also likes baseballs. She has 5 baseballs: 2 green baseballs and 3 yellow baseballs. ,. Question: How many balls does Barry have? Options: A: 9 B: 4. C: 11. D: 13.
Answer:
D