问题如下：
Which of following two statements are correct regarding on inherent limitations of Market-neutral strategies?
Statement 1: Practically speaking, it is no easy task to maintain a beta of zero.
Statement 2:Market-neutral strategies have a limited upside in a bull market unless they are “equitized.”
选项：
A. Statement 1
B. Statement 2
C. Both
解释：
Market-neutral strategies have two inherent limitations:
1 Practically speaking, it is no easy task to maintain a beta of zero. Not all risks can be efciently hedged, and correlations between exposures are continually shifting.
2 Market-neutral strategies have a limited upside in a bull market unless they are “equitized.” Some investors, therefore, choose to index their equity exposure and overlay long/short strategies. In this case, the investor is not abandoning equity-like returns and is using the market-neutral portfolio as an overlay.
Therefore, both of the statements are correct.
unless they are “equitized.” 这句话里面的they是指代啥？感觉这句话不通顺，所以不会做啊。以及，equitized能否举个例子说明下？ 谢谢