Which sequence of state transitions is INCORRECT in accordance with the following description? To provide for disaster recovery a system (designated as A) has been provided with a backup system (designated as B). Only one of them can be active at a time. When A goes down, В becomes active. When A comes back up then В becomes inactive and A becomes active again. However, when A is down and В also goes down then a message is sent to the system administrator. After this once A comes back up, A becomes active or if В comes up then В becomes Active.
Select one answer.
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