急躁【疑惑！！！】一个SC题目解析

Medicare,the United States government’s health insurance program for the elderly anddisabled, covers the full cost of home health care, but not with othernonhospital services where 20 percent of the costs must be paid bybeneficiaries.

B  butnot of other nonhospital services, making beneficiaries pay 20 percent of thecosts

我在网上看到毕老师对B的解释是，making beneficiaries pay 20 percent of the costs修饰的对象是other nonhospital services，  

我的疑问是这不是SVO，doing结构吗，doing不是修饰主语medicare的吗我在网上看过多种版本，SVO,doing。

    有说修饰的是S的，有说修饰O的，我被搞懵了，还请大家指点一下，谢谢！！