[求助]L2 请问residual income 有两种不同的方法算capital charge吗？

一道mock上的题

原题中提到The residual income approach can provide different valuations because of two
different methods for computing capital charge.

答案中提到It is correct that the residual income approach provides for two methods for computing capital charge – equity charge and total capital charge.

我怎么感觉只看到一种啊，就是equity

想请问怎么回事？