Assume that a company uses ApsaraDB for PolarDB. The company commonly queries users based on their basic information, including: addresses, company names, and ID numbers.
In this scenario, what is the best practice for creating a database index (or indexes)?
A . Create a b-tree index on each column to be searched.
B . Create a hash index on each column to be searched.
C . Create a gin index for multiple fields.
D . Create a gist index for multiple fields.
Answer: A
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