Which configuration will enable data source connection pooling?

Application server data source connection pooling needs to be enabled for an IBM Sterling Order Management V9.4 application deployed on Oracle WebLogic Application Server 12c and Oracle Database 11g (11.2.0.4).

Which configuration will enable data source connection pooling?
A . Add "jdbcService oraclePool datasource=<datasourceName>1′ in
$INSTALL_DIR/properties/customer_overrides properties and Update JVM argument to “-Dvendor=weblogic”
B . Add "jdbcService.oraclePool.datasource=<datasourceName>" in
$INSTALL_DIR/properties/jdbc.properties and Update JVM argument to “-Dvendor=weblogic12”
C . Add "jdbcService.oraclePool.datasource=<datasourceName>" in
$INSTALL_DIR/properties/jdbc.properties and Update JVM argument to “-Dvendor=weblogic”
D . Add "jdbcService.oraclePool.datasource=<datasourceName>" in
$INSTALL_DIR/properties/customer_overrides.properties and Update JVM argument to “-Dvendor=weblogic12”

Answer: A