D. On August 15, 2008, the International Olympic Committee announced North Korean shooter Kim Jong-su had tested positive for the banned substance propranolol and was stripped of his two medals. He had won a bronze medal in the 10 metre air pistol and silver in the 50 metre pistol. After Kim Jong-su was disqualified, the bronze medal in the 10 metre air pistol went to Jason Turner of the United States; in the 50 metre pistol, the silver medal went to Tan Zongliang of China, and the bronze medal to Vladimir Isakov of Russia.