Question: For a User Equipment (UE) with High-Speed Downlink Packet Access (HSDPA) capabilities, operating in Frequency Division Duplexing (FDD) mode, which of the following HSDPA UE capability categories are EXCLUSIVELY subject to Release 8 and later releases for channel quality indicator (CQI) reporting accuracy testing under fading environments?
Option 1: Categories 13, 14, 17, and 18
Option 2: Categories 19 and 20 only
Option 3: Categories 13, 14, 17, 18, 19, and 20
Option 4: Categories 7, 8, and 12
Explanation: According to the specifications, Release 7 applies to categories 13, 14, 17, and 18 for testing CQI reporting accuracy under fading environments. Release 8 and later releases additionally include categories 19 and 20 (not exclusively applying to all listed categories again). Thus, only categories 19 and 20 are exclusively subject to Release 8 and later releases for this specific testing, making Option 2 the correct answer.