(单选题)

Fund managers are moving further and further, into junk-rated debt because ( ).

A.these funds prove difficult to sell when investors rush for the exits

B.problems at some European funds make investors in the
U.S.be more vigilant

C.what really inside bond funds is more risk

D.these funds could eke out better returns

参考答案：C

参考解析：

根据题干信息定位第一段最后一句，原因在第二段的开头because there are multiple types of risk in bond investing因为证券投资存在多种风险。A项：事实证明，当投资者急于撤资时，这些基金很难卖出；B项：一些欧洲基金的问题使投资者转向美国更加警惕；C项：债券基金的真正风险更大；D项：这些基金可能会获得更好的回报。故本题正确答案选C。

知识点：细节题英语阅读理解通用英语