单选题Which is the correct description of the significance of the ORACLE_HOME environmental variable？（）AIt specifies the directory containing the Oracle software.BIt specifies the directory containing the Oracle-Managed Files.CIt specifies the directory for database files， if not specified explicitly.DIt specifies the base directory of Optimal Flexible Architecture （OFA） .
单选题
Which is the correct description of the significance of the ORACLE_HOME environmental variable？（）
A
It specifies the directory containing the Oracle software.
B
It specifies the directory containing the Oracle-Managed Files.
C
It specifies the directory for database files， if not specified explicitly.
D
It specifies the base directory of Optimal Flexible Architecture （OFA） .
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