Oil prices were volatile on Wednesday after tumbling nearly 10% in the previous day, as concerns over a sharply plunge in fuel consumption continue to weigh on investors’ sentiment, despite an agreement by major oil-producing countries to cut output by a record 9.7 million barrels per day. Also, API data released on Tuesday showed US crude inventories rose by 13.1 million barrels last week, more than forecasts of an 11.7 million barrels rise, and the biggest increase since the February of 2017. The US crude was nearly flat at $20.2 a barrel and the Brent crude went down near 1.6% to $29.1 a barrel.