437.Within a resource-plan definition, what differentiates a top-level plan from a subplan?
A.A subplan has the PLAN_SUB parameter value set to SUB.
B.A top-level plan has the GROUP_OR_PLAN parameter set to the name of the subplan in the resource-plan definition.
C.There is no difference in the resource-plan definition.
D.A subplan always has the CPU_MTH parameter value set to RATIO.
E.The string TOP_LEVEL is appended to the name of top-level resource plans.
正确答案是C