How will Opec react to the price of oil dropping from its high of $147 to $69 last week?

Concern over the economic crisis prompted Opec to bring forward an emergency meeting, scheduled for November, to this Friday in Vienna.

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How will Opec react to the price of oil dropping from its high of $147 to $69 last week, when its members convene at an emergency meeting in the Austrian capital of Vienna this Friday?