Question: What is the purpose of including the Request Type Information Element (IE) in a message?
Option 1: To indicate the priority level of a PDP context request.
Option 2: To specify the QoS parameters for a PDP context.
Option 3: To indicate whether the PDP context request is for handover from a non-3GPP access network or to activate a PDP context for emergency bearer services.
Option 4: To identify the type of mobile device requesting a PDP context.
Explanation: The Request Type IE is used to indicate whether the PDP context request is for handover from a non-3GPP access network or to activate a PDP context for emergency bearer services, allowing the network to handle these special cases appropriately.