Utilize the input text as a context reference, choose the right relationship between 'Wesfarmers' and 'COLES supermarkets' from the options.
Options: industry, legal form, owner of, subsidiary

COLES supermarkets owner Wesfarmers has lifted its underlying profit 8.3 per cent to $2.44 billion and increased its final dividend six cents to $1.11 per share.
subsidiary