Vаntаge Grid's mоnitоring system hаndles a sudden equipment failure twо different ways depending on which substation is affected. At Substation A, the system was overengineered with enough spare transformer capacity that the failure never causes a service disruption anyone notices — nothing actively happens, the excess capacity simply absorbs it. At Substation B, the system detects the failure within seconds, automatically reroutes load, and restores full service within a minute. Which resilience category does each substation's response belong to?