Question: For a UTRA FDD User Equipment (UE) supporting DB-DC-HSDPA, which UE capability categories are subject to the receiver single link performance requirements for High Speed Physical Downlink Shared Channel (HS-DSCH)?
Option 1: Categories 1-10
Option 2: Categories 11-20
Option 3: Categories 21-28
Option 4: Categories 29-32
Explanation: The requirements for the receiver single link performance of HS-DSCH apply to UTRA FDD UEs supporting DB-DC-HSDPA with UE capability categories 21-28, enhancing performance for specific higher-capability devices.