Crude oil prices took a jolt Friday morning, dropping to $86 per barrel after a Labor Department report that said the U.S. unemployment rate rose in October. The rate rose from 7.8 percent to 7.9 percent, in line with expectations, but enough to put a backspin on oil prices. Higher unemployment implies demand will decline. West Texas Intermediate crude oil for December delivery gave up 99 cents to $86.10 per barrel on the New York Mercantile Exchange. Reformulated gasoline in recent trading added 0.08 cents to $2.6344 a gallon. Home heating oil shed 1.33 cents to hit $3.0199 a gallon. Natural gas lost 0.74 cents to reach $3.625 per million British thermal units. At the pump, the average price for a gallon of regular unleaded gasoline was $3.496, down from Thursday\'s $3.507, AAA reported.