Question: What are the conditions for including the HLC repeat indicator information element in a message?
Option 1: Only if the high layer compatibility i IE is contained in the message.
Option 2: Only if the BC repeat indicator IE is contained in the message.
Option 3: If and only if both the BC repeat indicator IE and the high layer compatibility i IE are contained in the message.
Option 4: If either the BC repeat indicator IE or the high layer compatibility i IE is contained in the message.
Explanation: The HLC repeat indicator information element is included only when both conditions - presence of BC repeat indicator IE and high layer compatibility i IE in the message - are met, ensuring consistency in repeat indications.