Question: In an MBMS scenario with DASH, if `r13:DASHQoEProcedure` is present but `DASHQoESamplePercentage` is absent, what determines the inclusion of DASH QoE metrics in a Reception Report when the reception reporting procedure is active?
Option 1: A fixed probability defined by the network operator's default settings.
Option 2: The value of `samplePercentage` from the `postReceptionReport` element.
Option 3: DASH QoE metrics reports are sent every time an MBMS reception report is sent, with no random sampling applied.
Option 4: The decision is based on the UE's (User Equipment) current bandwidth availability.
Explanation: If `r13:DASHQoEProcedure` is present and `DASHQoESamplePercentage` is absent during an active reception reporting procedure, a DASH QoE metrics report shall be sent every time an MBMS reception report is sent, implying no random sampling (i.e., 100% inclusion rate for the period in question).