By Laura Sanicola (Reuters) -Oil prices hit nine-month lows on Monday in choppy trade, pressured by a strengthening dollar as market participants awaited details on new sanctions on Russia. Brent crude futures for November settlement fell by $1.09, or 1.3%, to $85.06 a barrel by 11:58 a.m. EDT (1558 GMT). The session low was $84.51, the lowest since Jan. 14. U.S. West Texas Intermediate (WTI) crude for November delivery dropped by 90 cents, or 1.1%; its session low was$77.21, the lowest since Jan. 6. Both contracts had risen early in the session after slumping by about 5% on Friday. The dollar…