which of the followings are true?
选项：

A:Diversification can reduce systematic risk;
B:Risk can be classified as systematic risk and non-systematic risk;
C:Diversification can reduce non-systematic risk;
D:systematic risk is called market risk, which can be eliminated by diversification;
E:high inflation is an example of systematic risk;
F:A legal suit against a company for environmental pollution is considered as systematic risk.; G:Trade war between China and the USA is an example of unsystematic risk.