Message : Required fields BRUSSELS, May 21 (Reuters) - EU antitrust regulators have launched a preliminary investigation into Coca Cola Co, the European Commission said on Friday. "We can confirm that the Commission has sent out questionnaires, as part of its preliminary investigation into Coca Cola," a Commission spokeswoman said. "The preliminary investigation is ongoing. We cannot comment on or predict its timing or outcome," she said, declining to provide further details. Coca Cola said it received a formal request for information on Thursday. "While we will co-operate fully with the Commission, it would be inappropriate for us to comment further while the