A group of runners grabbed the most attention when they dressed up as a monk fahai (a character in the White Serpent Tale) when participating in the 2017 Hangzhou International Marathon in Hangzhou, Zhejiang province on Sunday. The long-distance race kicked off on Sunday morning in the city, with over 30,000 from more than 45 countries participating.
How many people participated in Hangzhou Marathon?
A. Over 30,000
B. Over 40,000
C. Over 50,000
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