Besides lowering the uninsured rate, another objective of the ACA was to reduce medical spending growth. Which of the following was not an element of the ACA arguably aimed at slowing spending growth?

A. A requirement that hospitals charge private insurers no more than 125 percent of what they would charge Medicare for the same service

B. The Cadillac Tax (still not implemented)

C. A mandate that Medicare experiment with new models for paying providers

D. Adopting a managed competition model to promote more productive competition in the individual insurance market