Awwal 08, 1432, April 12, 2011, SPA -- The oil price of the Organization of the Petroleum Exporting Countries (OPEC) moved further above the $120 mark at the start of the week, the group said Tuesday. OPEC's basket price inched up to $120.30 per barrel (159 liters) on Monday, $0.29 higher than at the end of last week. The Vienna-based organization was scheduled to issue its latest monthly market outlook later in the day, according to a report of the German Press Agency "DPA".