Which of the Following Is Not an Argument Used by Economists

Which of the following is not an argument used by economists and policymakers who are in favor of moving toward a Medicare for All system of health care?

A) The Medicare for All structure would ultimately increase competition in the health insurance industry, and this would reduce health care costs and increase economic efficiency.
B) A single-payer plan would reduce the paperwork caused by the current system.
C) Medicare for All would potentially reduce the administrative cost of coordinating a decentralized system.
D) The Medicare for All structure would save costs due to the bargaining power of the federal government.