NO.PZ2023122201000085
问题如下：
A cryptocurrency ETF seeks to
选项：
A.gain exposure to cryptocurrencies through cash and cryptocurrency derivatives.
B.replicate digital asset investment returns by investing directly in cryptocurrencies.
C.gain exposure to the cryptocurrency theme by investing in public equities related to the digital asset sector.
解释：
A cryptocurrency ETF seeks to replicate digital asset investment returns by cash and cryptocurrency derivatives.能解释一下每个选项么
