Jill Marsh, CFA, works for Advisors where she manages a portfolio for a wealthy family. Marsh earns one percent of the portfolio’s value each year in the form of a commission from Advisors. The family just told her that any year the portfolio she manages earns more than a 10 percent return, the family will give her the use of the family’s vacation home for one week. Hirsh will comply with Standard Ⅳ (B), Additional Compensation Arrangements, if she:（）

A. does nothing with respect to this.

B. sends an e-mail to her supervisor about the vacation home.

C. delivers a typed memo to her supervisor about the vacation home the first time she uses it.

简要叙述资产评估工作的独立性原则。