OPT:
(a). London.;
(b). Beijing.;
(c). Athens.;
(d). Sydney.;
Given those answer options, answer the question: Read the following article and answer the question. Article: Did you watch the 2012 London Olympic Games? If you did, you must know a person who changed men's swimming history of China and set a new world record for us. Yes, that's Sun Yang who gave us lots of surprise by winning two Olympic gold medals in swimming. Sun Yang became the first Chinese male swimmer to earn a gold medal as he won the 400m freestyle with an Olympic record in London on July 28th, 2012.It is the first gold medal that a Chinese swimmer has ever won in the Olympic history. All of the Chinese are proud of him. He is the hero of the whole China. Sun Yang was born on December 1st, 1991 in Zhejiang. He is 198cm tall and 89kg in weight. Sun Yang's hobbies are singing and reading. Sun Yang loved sports when he was very young. He kept training hard every day and that is why he has made such great achievements. Now nearly every Chinese knows him. When he goes anywhere, he must be followed by his fans, which makes his life less convenient and difficult, but he is very rich. So do you want to be a person like him? Question: Where were the Olympic Games held in 2012? Answer:
A:
(a).