active和enhanced感觉区分不明显，portfolio1和3

问题如下：

Danny Moynahan, CFA, is a fixed-income portfolio manager at Reagan Investment Advisory (Reagan). He agrees with his wife, a professor of investments class, to talk to her class about managing fixed-income portfolios. He plans to put together six pages for his discussion.

On page 2, Moynahan decides to outline the three total return approaches he utilizes to manage Reagan’s fixed-income portfolios. He puts together the following exhibit:

How should Moynahan most likely label the management approaches for each of the portfolios described in Exhibit 1 on page 2 of his presentation?

选项：

A.Portfolio 1 = Active Management, Portfolio 2 = Pure Indexing, Portfolio 3 = Enhanced Indexing

B.Portfolio 1 = Enhanced Indexing, Portfolio 2 = Pure Indexing, Portfolio 3 = Active Management

C.Portfolio 1 = Active Management, Portfolio 2 = Enhanced Indexing, Portfolio 3 = Pure Indexing

解释：

Correct Answer: A

A is correct. Moynahan should label the portfolios on page 2 as follows: Portfolio 1 = Active Management, which allows for larger risk factor mismatch to the benchmark. Portfolio 2 = Pure Indexing, which involves attempting to replicate a bond index as closely as possible. Portfolio 3 = Enhanced Indexing, which is closely linked to the benchmark but attempts to generate a modest amount of outperformance versus the benchmark.