By Laura Mandaro
SAN FRANCISCO (MarketWatch) -- Oil futures added to gains above $90 on Wednesday, after the National Association of Realtors said sales of existing homes rose 5.6% in November to a seasonally adjusted rate of 4.68 million. The reading was largely in line with economists' expectations. Oil for February delivery rose to $90.58 a barrel, up 77 cents for the session and more than 10 cents above where the contract traded before the 10 a.m. housing report. Gold for February delivery turned higher, rising 20 cents to $1,389 an ounce.
