Oil prices firm

Crude oil prices rose slightly on Thursday in cautious trading as the market awaited crucial data on US economic growth for the third quarter, analysts said.
New York's main contract, light sweet crude for December delivery added 12 cents to 77.58 dollars a barrel.
Brent North Sea crude for December delivery rose 14 cents to 76.00 dollars a barrel in morning deals.
Investors will later digest the latest gross domestic product (GDP) figures for the United States, which is the world's biggest energy consuming nation.