A. the number and size of firms b. the likelihood of new firmquot;s entering a market. D. both a and b e. both b and c Which of the following is NOT...

A. the number and size of firms b. the likelihood of new firm"s entering a market. D. both a and b e. both b and c Which of the following is NOT one of features characterizing market structures? A. the number and size of firms b. the likelihood of new firm"s entering a market. C. the level of capital investment in research and development. D. the degree of product differentiation.