What should be the default software location for Oracle Clusterware?

What should be the default software location for Oracle Clusterware?

A.
The same directory as the Oracle Database home

B.
Using Oracle RAC 11g Release 1, the Oracle Grid Infrastructure Home

C.
Using Oracle RAC 11g Release 2, the Oracle Grid Infrastructure Home

D.
The root file system

Explanation:
* Oracle Clusterware is installed as part of Oracle Database 11g. OUI installs Oracle
Clusterware into a directory structure that is referred to as CRS_home. This home is separate
from the home directories of other Oracle software products installed on the same server.
* The Oracle RAC database software is installed from the same Oracle Database 11g installation
media. By default, the standard Oracle Database 11g software installation process installs the
Oracle RAC option when OUI recognizes that you are performing the installation on a cluster. OUI
installs Oracle RAC into a directory structure that is referred to as Oracle_home. This home is
separate from the home directories of other Oracle software products installed on the same
server.
Reference: Installing and Configuring Oracle Clusterware and Oracle RAC