Read the following passage and answer the item that follows. Your answers to this item should be based on the passage only.The IMF has pointed out that the fast growing economies of Asia face the risk of falling into 'middle-income trap'. It means that average income in these countries, which till now have been growing rapidly, will stop growing beyond a point - a point that is well short of incomes in the developed West. The IMF identifies a number of causes of middle-income trap-none of which is surprising-from infrastructure to weak institutions, to less than favorable macroeconomic conditions. But the broad, overall cause, says IMF, is a collapse in the growth of productivity.Which among the following is the most logical, rational and critical inference that can be made from the above passage?

• A. Once a country reaches middle income stage, it runs the risk of falling productivity which leads to stagnant incomes.
• B. Falling into middle-income trap is a general characteristic of fast growing economies.
• C. There is no hope at all for emerging Asian economies to sustain the growth momentum.
• D. As regards growth of productivity, the performance of Asian economies is not satisfactory.