1. A colleague tells you that they studied two markets, A and B, and that they found the following: 01\" = 0.4, C? = 0.5, 0'" = 0.7, CC? = 0.8, 05' = 0.9, C33 = 0.91. Your colleague insists this is proof that market B is denitely more concentrated than market A, but you are not so convinced. What piece of information would you need to know to agree with your colleague