Identify all of the correct statements related to the role and services of commercial insurance companies.
a) Local or regional payers are often affiliated with a national plan.
b) One large company dominates the national market for commercial insurance.
c) Local or regional payers are not affiliated with the BlueCross BlueShield Association.
d) Local or regional payers are often affiliated with the BlueCross BlueShield Association.
e) A small number of large companies dominate the national market for commercial insurance.