However, oil prices steadied in late trading, supporting shares such as BG Group (LSE: BG.L - news ) - up 6p to £10.77 - and Royal Dutch Shell A shares, which inched 20p higher to £18.38.
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, industry, distribution format, headquarters location