You have created a resource plan， DAY. You execute the following code：       
SQL> BEGIN  
     DBMS_RESOURCE_MANAGER.CREATE_SIMPLE_DIRECTIVE  
（ PLAN => ’DAY’，       
COMMENT => ’DEPARTMENTS PLAN’，  
GROUP_OR_SUBPLAN => ’DEPARTMENTS’，       
CPU_P1=0）；       
END；  
Then， you issue the following code：       
SQL> BEGIN  

DBMS_RESOURCE_MANAGER.CREATE_SIMPLE_DIRECTIVE       
（ PLAN => ’DAY’，       
COMMENT => ’DEPARTMENTS PLAN’，      
 GROUP_OR_SUBPLAN => ’DEVELOPERS’，       
CPU_P2=100）；       
END；  
What will be the impact of executing the above code？（）  

A. The DEVELOPERS and DEPARTMENTS subplans will be allocated CPU equally.
B. The DEVELOPERS subplan will be allocated 100 percent CPU if there are no resources allocated to the DEPARTMENTS subplan.
C. The DEPARTMENT subplan will be allocated 100 percent CPU if there are no resources allocated to the DEVELOPERS subplan.
D. The second code will not execute because one resource plan cannot be used by more than one subplan.