By Claudia Assis
SAN FRANCISCO (MarketWatch) -- Crude-oil futures modestly added to their gains Wednesday after news reports of a rise in a key gauge of consumer sentiment. Oil added 41 cents, or 0.5%, to $81.65 a barrel on the New York Mercantile Exchange. Gold futures, however, kept their losses, with the December contract declining $2, or 0.1%, to $1,377.40 an ounce. The University of Michigan/Reuters consumer sentiment index rose to 71.6 in November from 67.7 in October.
