Oil prices rose on Friday, supported by signs of tightening supply and demand fundamentals, although a warning about excessive China economic optimism still weighed somewhat on markets. A man walks at a petrol station in Riyadh, Saudi Arabia October 8, 2017. REUTERS/Faisal Al Nasser Brent crude futures LCOc1, the international benchmark for oil prices, were at $57.45 at 0639 GMT, up 22 cents, or 0.4 percent from their last close. U.S. West Texas Intermediate (WTI) crude futures CLc1 were at $51.54 per barrel, up 25 cents, or 0.5 percent. The higher prices came after a more than 1 percent fall in prices the previous day. This was put down to profit-taking following four days of straight gains, but also to a sudden market slump which spooked traders after the veteran but outgoing governor of China’s central bank warned of a “Minsky moment”, a reference to excessive […]