Closing prices for crude oil, gold and other commodities, and foreign exchange levels. : Benchmark U.S. crude oil for February delivery fell $1.21 to $52.36 a barrel Thursday. Brent crude oil for March delivery fell $1.32 to $55.10 a barrel. Wholesale gasoline for February delivery fell 3 cents to $1.53 a gallon. February heating oil fell 3 cents to $1.59 a gallon. February natural gas rose 7 cents to $2.74 per 1,000 cubic feet. Gold for February delivery fell $21.50 to $1,829.90 an ounce.