第三点对银行来说不是优点吗？

问题如下：

Which of the following are flaws in The securitization of subprime mortgages?

I:The product structure that was so complex (multilayered securitized products) and opaque that investors have no real idea what they were holding.

II:Even rating agencies cannot fully evaluate these complex products.

III:Banks rolled over short-term debt to finance the investments in long-term mortgage-backed securities in off-balance-sheet entities such as structured investment vehicles (SIVs).

选项：

I and II.

II and III.

I and III.

I, II and III.

解释：

D is correct.

考点：Flaws in The Securitization of Subprime Mortgages

解析：结构化产品很复杂，投资者甚至评级机构都无法对它们做出一个全面的风险评估。银行也会通过spv，siv来把贷款和其证券化过程移出表外。