Question: In Performance Management (PM) for Telecommunication, when measuring attempt/success/failure procedures (e.g., RRC connection establishment) with only two counters provided due to the relation (#success + #failure) = #attempt, which combination would NOT allow retrieval of detailed failure causes?
Option 1: Providing both Attempt and Failure counters
Option 2: Providing both Success and Failure counters
Option 3: Providing only Attempt and Success counters
Option 4: Providing only Success and Attempt counters
Explanation: When only the Attempt and Success counters are provided, calculating the Failure counter is possible (since #failure = #attempt - #success). However, this combination does not provide detailed information on the causes of failures, as it lacks direct failure data that could be split by cause when more specific failure counters are available.