Take context from the input text and decide on the accurate relationship between 'RATP' and 'public transport' from the options provided.
Options: distributed by, founded by, parent organization, industry

The leading private operator of public transport systems in Spain, Avanza won a bid for the contract in June over French rivals RATP and Transdev, Britain's National Express (LSE: NEX.L - news ) and Barraqueiro of Portugal.
industry