Refer to the input text as context and select the correct relationship between 'Yum Brands' and 'Pizza Hut' from the available options.
Options: industry, publisher, subsidiary, location of formation

The company has been outperforming rivals such as Yum Brands Inc's (YUM.N) Pizza Hut and McDonald's Corp (MCD.N) in the United States due to the digital investments, which make it easier for customers to order pizzas using methods such as smart watches and digital wallets.
subsidiary