Oil plunges more than 6 percent despite potential OPEC cut

BOSTON (Reuters) - Oil prices slumped more than 6 percent on Friday, with Brent set for a 12-percent plunge this week, as fears that supply would overpower demand intensified, even as major producers considered cutting output.Oil supply, led by U.S. producers, is growing faster than demand and to prevent a build-up of unused fuel such as the one that emerged in 2015, the Organization of the Petroleum Exporting Countries is expected to start trimming output after a meeting on Dec. 6.But this has..