Take context from the input text and decide on the accurate relationship between 'BG Group' and 'Royal Dutch Shell' from the options provided.
Options: currency, parent organization, position held, product/material produced

Fri, Sep 25, 2015, 14:05 BST - UK Markets close in 2 hrs 25 mins Are BP Plc, Royal Dutch Shell Plc & BG Group plc Worth Holding In Your Portfolio?
parent organization