Question: What action does a User Equipment (UE) take with regards to `soundingRS-UL-ConfigDedicated` upon receiving an SRS release request from lower layers for an indicated serving cell?
Option 1: The UE applies the default physical channel configuration for both `soundingRS-UL-ConfigDedicated` and `soundingRS-UL-ConfigDedicatedAperiodic`.
Option 2: The UE modifies only `soundingRS-UL-ConfigDedicatedAperiodic` without altering `soundingRS-UL-ConfigDedicated`.
Option 3: The UE applies the default physical channel configuration for `soundingRS-UL-ConfigDedicated`, but does not modify `soundingRS-UL-ConfigDedicatedAperiodic`.
Option 4: The UE releases both `soundingRS-UL-ConfigDedicated` and `soundingRS-UL-ConfigDedicatedAperiodic` without applying default configurations.
Explanation: Upon receiving an SRS release request, the UE applies the default physical channel configuration specifically for `soundingRS-UL-ConfigDedicated`. It does not apply this default configuration to `soundingRS-UL-ConfigDedicatedAperiodic`, highlighting a nuanced distinction in handling these configurations upon an SRS release request, crucial for efficient radio resource utilization.