C and D are the content analysis of the influencing factors of futures prices. The structural analysis of the influencing factors of futures price also includes ① classifying information according to the industrial chain, and obtaining the influence of each factor on commodity prices.

Improve the path, sort out the logical relationship of price transmission, and find out the most fundamental and essential key factors worthy of attention; (2) Constantly revise the estimate of the influence degree of key factors on the market, eliminate the factors that have no effect on the market, add new key factors, and track the trend.