Question 6 2 pts For the next two questions (#7 and #8), use the following information: An industry is composed of five firms. The sales in this market, from largest to smallest firm, are: $10, $5, $2, $2, $1. What is the industry's four-firm concentration ratio? O 0.85 O 0.90 0.95 O 1.00 Question 7 2 pts While market concentration is a helpful way to assessing the degree of competitiveness of a market, other factors impact competitiveness as well. Which of the following is also a relevant factor when assessing the degree of competitiveness of an market? Threat of entry Product class Geographic size of the market All of the above