题目内容：
根据材料，完成题。第二篇
IOC's Official Problems
The International Olympic Committee (IOC) has launched an investigation into allegations that its officials in more than 50 countries have been selling London Olympics tickets on the black market for profit. The IOC met at an emergency session on Saturday to look into a pile of evidence uncovered by Britain's Sunday Times newspaper. The paper claims that high-ranking Olympic officials have been selling tickets for the games at hugely inflated prices. The highest priced tickets on the black market were for the men's 100-meter final. The IOC has issued a statement saying it "takes these allegations very seriously and has immediately taken the first steps to investigate. "
IOC rules forbid national Olympics committees from selling tickets, overseas, increasing ticket prices or selling tickets to unauthorized, third-party resellers. Despite this, Sunday Times undercover reporters posing as illegal ticket sellers say they have recorded evidence of 27 officials selling tickets distributed to 54 countries. One of the most serious allegations was against the Greek Olympic Committee president Spyros Capralos. He denies saying he had "pulled strings" with the head of the London Olympics Sebastian Coe even though the paper posted videos of its reporters' negotiations with Capralos on its Website. Mr Capralos has so far refused to comment.
The IOC is investigating its own officials for__________. A．running the black market
B．secretly meeting reporters
C．illegally selling tickets
D．criticizing Sunday Times
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