
Passage: The pollution problem caused by garbage exudates is most serious in countries with an annual per capita output of between $4000 and $5000, while it is less serious in relatively poor or rich countries. In the initial stage of industrial development, the pollution problem is relatively serious. When industrial development can create enough means to deal with such problems, the pollution problem will be reduced. At present, the per capita output value of country X is US $5000 per year, and the pollution caused by garbage exudates in country X will gradually decrease in the next few years.
Question: Which of the following statements is the hypothesis on which the above argument depends?
A. A.In the following years, country X will establish a fine system for illegal waste disposal.
B. B.In the next few years, countries around country X will reduce the discharge of pollutants from the air and water.
C. C.In the next few years, the industrial development of country X will grow.
D. D.In the next few years, the industrialization process of country X will be affected by the problem of pollution control.
Answer: