LONDON, July 21 (Reuters) - Vodafone said the bosses of its four biggest European markets would report directly to chief Vittorio Colao to speed up decision making in fast-changing markets, after it decided to scrap its European regional management structure.
Take context from the input text and decide on the accurate relationship between 'Vittorio Colao' and 'Vodafone' from the options provided.
Options: employer, operator, platform, developer