GM, NOV 12, 8.15 AM:G20 MEET ON AT SEOUL EXP CURRENCY FLUCTUATIONS,/USD STRENGTHENS AS EURO SOVEREIGN CRISIS FEARS LINGERS/ALL COMM TRADING LOWER CRUDE ARD $86.76 DOWN ABOUT 40RS CLD TEST SUPP 3850 /NAT GAS TRADING LOWER 0.60%/GOLD$1398, SILVER$27.25/BASE METALS LOWER COPPER DOWN ABT 0.70%/