According to the Text, Changes to Eliminate Most of the Problems

According to the text, changes to eliminate most of the problems the United States is experiencing in the market for health insurance would include all of the following except:

A) eliminating the third-party payer system.
B) replacing the employer-based system
C) eliminating the state health insurance regulations that prevent people from purchasing health plans available in other states
D) eliminating restrictions on doctors competing across state lines
E) instituting a centrally-planned system.