问题如下：
In a typical securitization, the sources of funds are mainly several classes of bonds arranged by ratings and a relatively large equity tranche
选项：
A.True
False
解释：
False
Equity tranches typically comprise less than 10% of total funding.
several classes of bonds arranged by rating是主要资金来源，题目中虽然包含了 equity tranche，但这些合计，不更是主要的资金来源么？
