单选题You recently activated a resource plan named OLTP_PLAN in your database. Several users are concurrently running long transactions. You decide to monitor the resource manager to determine if the resource allocation formulated in the OLTP_PLAN is sufficient for peak database hours. Which dynamic performance view should you use to display the CPU time consumed by all the sessions within the resource groups？（）A V$SYSSTATB V$SESSSTATC V$RSRC_PLAND V$RSRC_CONSUMER_GROUP
单选题
You recently activated a resource plan named OLTP_PLAN in your database. Several users are concurrently running long transactions. You decide to monitor the resource manager to determine if the resource allocation formulated in the OLTP_PLAN is sufficient for peak database hours. Which dynamic performance view should you use to display the CPU time consumed by all the sessions within the resource groups？（）
A
V$SYSSTAT
B
V$SESSSTAT
C
V$RSRC_PLAN
D
V$RSRC_CONSUMER_GROUP
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