Analyze the relationship between 'Tesco Bank' and 'Tesco' within the context of the input sentence.
Options: parent organization, subsidiary, publisher, founded by

Tesco Bank offers 1.6pc on instant-access savings The new rate, which includes an introductory bonus, is an improvement but not quite a best buy Tesco Bank's new interest rate shows the financial environment is improving Photo: Alamy By Amelia Murray
parent organization