In the last few years investment in green technology has increased substantially in Daslow. a developed economy. With an increased flow of credit to this section, the stock prices of some of the leading green technology firms went up by 75 percent or more in the current fiscal year A group of economists in Daslow claims that such a sharp increase in stock prices are an indication of a bubble Since bubbles are unsustainable this could hurt the economy in the near future However, a group of industry analysts disagrees They feel that with rising concern for the environment, the green technology industry is only likely to grow faster. Which of the following, if true, will support the economists' claim' A. Leading investment houses have downgraded Arms in this sector owing to high leverage. B. The Labor Statistics Bureau in Daslow announced that the green technology sector accounted for 40 percent of the new jobs created this year C. The demand for electric vehicles in Daslow has increased sharply because they are energy-efficient and environment-friendly D. Firms in this sector have invested large sums of money in research on green technology. The prices of conventional sources of energy like coal and petroleum have increased in recent months