Question: In the context of SMS protocol headers, what does setting `bit 6` to `1` in the Selective Status Report (TP-SRR) facility achieve, specifically for concatenated messages?
Option 1: It requests the inclusion of the original User Data Header (UDH) in all subsequent Status Reports.
Option 2: It ensures a Status Report generated due to a permanent or last temporary error cancels the SRR for the rest of the Short Messages in a concatenated message.
Option 3: It disables the creation of Status Reports for short message transactions completed successfully.
Option 4: It indicates to the receiving mobile that the message is part of a concatenated SMS.
Explanation: Setting `bit 6` to `1` in the Selective Status Report facility has a specific implication for concatenated messages. When set, if a Status Report is generated due to either a permanent error or the last temporary error encountered during the transfer of a Short Message within a concatenated message, this setting will cancel the generation of Status Reports (SRR) for the remaining Short Messages in that concatenated message.