West Texas Intermediate ( WTI ) crude oil futures, the main US oil benchmark, were 0.2% lower while Brent crude, the international oil gauge, was down by 0.1% at $50.66 per barrel at the time of writing. In September, OPEC members agreed, in principle, to lower oil output following two years' of price erosion due to global oversupply. Also feeding into trading sentiment on Monday was the upcoming release of Eurozone inflation and third quarter economic growth figures, which are due to be published later in the day.