Oil futures settled with a loss on Tuesday, but gained for the month ahead of a key meeting of the Organization of the Petroleum Exporting Countries later this week. July WTI crude settled at $49.10 a barrel on the New York Mercantile Exchange, down 23 cents, or 0.5%, for the session. Prices climbed 6.9% from the settlement of the front-month contract at the end of April. That marked WTI's fourth straight month of gains.
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