Oil prices sagged on Friday as investors locked in earlier gains ahead of a meeting of oil producers this weekend, looking for more hints on a proposed deal to scale back output. U.S. crude for December delivery fell 45 cents, or 0.91%, to $49.27 on the New York Mercantile Exchange. Brent crude, the global oil benchmark, fell 44 cents, or 0.87% to $50.03 a barrel on London’s ICE Futures exchange. Since September, oil prices have been buoyed by a tentative deal by the Organization of the Petroleum Exporting Countries to cut production and pull prices out of a two-year slump. Rising uncertainty over the execution of the plan has, however, seen oil prices fall 2% so far this week. Crude is on track to end the week lower, breaking a five week streak of gains. OPEC officials are scheduled to meet in Vienna over the weekend to discuss the […]