Which four objectives are achieved by using Resource Manager to manage multiple concurrent user sessions that are compet

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Which four objectives are achieved by using Resource Manager to manage multiple concurrent user sessions that are competing for resources? (Choose four.)

A. distributing available CPU by allocating percentages of CPU time to different users and applications
B. limiting the degree of parallelism of any operation performed by members of a group of users
C. limiting queries based on resource consumption of runaway sessions or calls that consume more than a specified amount of CPU, physical I/O, logical I/O, or elapsed time
D. limiting the number of concurrent sessions for a user E. limiting the number of user sessions allowed to be concurrently active within a group of users F. limiting the number of parallel executions that can be executed by a user