问题如下：
In real estate investment, as the loan-to-value ratio decreases, risk most likely decreases for:
选项：
A.equity investors only.
B.debt investors only.
C.both debt and equity investors.
解释：
C is correct.
当LTV ratio越低的时候，不管是debt investor，还是equity investor, 风险都是越来越低。
老师…………Loan-to-value没懂，是谁比谁啊？为什么两者增加都会下降
