Take context from the input text and decide on the accurate relationship between 'BG Group' and 'Royal Dutch Shell' from the options provided.
Options: parent organization, stock exchange, publisher, developer

It (Other OTC: ITGL - news ) would be wrong to say City investors are on the point of insurrection over Royal Dutch Shell (Xetra: R6C1.DE - news ) ’s blockbuster takeover bid for BG Group (LSE: BG.L - news ) .
parent organization