In real applications,all of the following complexities of heterogeneity are common except A) a large number of humps for each coefficient B) many coefficients C) homogenous solutions are more accurate D) the coefficients are correlated

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In real applications,it is not uncommon to have a large number of humps for each coefficient,to have many coefficients,and also to find that the coefficients may be correlated (e.g.,people who care more about price may care less about styling).

In Real Applications,all of the Following Complexities of Heterogeneity Are