NO.PZ2023040301000077
问题如下：
Which of the following is an example of a style index? An index based on:
选项：
A.
geography
B.
economic sector
C.
market capitalization
解释：
Style indices represent groups of securities classified according to market capitalization, value, growth, or a combination of these characteristics.
请问这题怎么理解？A和B分别是什么分类？
