Question: In E-UTRA, what is the primary purpose of the `maxNumberUpdatedCSI-Proc-STTI-Comb22-Set1-r15` field for a User Equipment (UE) with more than 2 Component Carriers (CCs)?
Option 1: To limit the maximum number of serving cells for Carrier Aggregation (CA)
Option 2: To define the minimum periodicity for Channel State Information (CSI) reporting
Option 3: To specify the UE's capability for short Transmission Time Interval (TTI) in downlink only
Option 4: To indicate the maximum number of CSI processes that can be updated per UE for aperiodic CSI requests with short TTI specific A-CSI reporting
Explanation: This field manages CSI processes in Carrier Aggregation scenarios with more than two Component Carriers, impacting resource utilization and network performance by optimizing UE feedback for multiple CCs, influencing adaptive modulation and coding scheme selection, beamforming, and more.