Refer to the input text as context and select the correct relationship between 'Texas Instruments' and 'National Semiconductor' from the available options.
Options: legal form, chief executive officer, subsidiary, publisher

National Semiconductor rose 7.4 percent, or $1.74, to $25.39 and Texas Instruments shares added 3.6 percent, or $1.11, to $32.09, also on the Big Board.
subsidiary