Match the following: List I List II A. TV 1. 1 kHz B. Radio 2. 3 kHz C. Telephony 3. 9 kHz D. Telegraphy 4. 5 MHz

• A-4, B-1, C-2
• A-4, B-3, C-2
• A-2, B-1, C-3
• A-1, B-2, C-3