The possibility of new entrants into an industry is considered in the calculation of:
A
the concentration ratio.
B
the Herfindahl–Hirschman index.
C
neither the concentration ratio nor the Herfindahl–Hirschman index.
C为什么不对？ HH应该是考虑到了新进入的厂家？因为计算的是所有的市场份额的平方，为什么说没有考虑到呢？
