Which of the following is true regarding Porter's Diamond theory? 关于波特的钻石理论,下列哪正确的?
A.
It predicts that countries should be importing products from those industries where all four components of the diamond are favorable.报告预测,各国应该从钻石的四种成分都有利的行业进口产品。
B.
Porter's theory has been proven to be an accurate predictor of the importing and exporting patterns of countries.波特的理论已被证明是对国家进出口模式的准确预测。
C.
It predicts that countries should be exporting products from those industries where all four components of the diamond those areas where the components are not favorable.它预测,这些国家应该出口的产品来自那些钻石的所有四种成分都不合适的行业。
D.
Porter's theory has not been subjected to detailed empirical testing, so we do not know if it is correct.波特的理论没有经过详细的实证检验,所以我们不知道它是否正确。