Question: For a UTRA FDD UE supporting DB-DC-HSDPA, which of the following HSDPA UE capability categories are subject to MIMO performance requirements for HS-DSCH in multi-path fading environments?
Option 1: Categories 15 - 20
Option 2: Categories 25 - 28
Option 3: Categories 5 - 12
Option 4: Categories 30 - 32
Explanation: This is correct because the MIMO performance requirements for HS-DSCH in multi-path fading environments apply to UTRA FDD UEs supporting DB-DC-HSDPA, specifically targeting HSDPA UE capability categories 25 through 28, ensuring optimal information bit throughput (R) in such environments.