What Did a 2009 Study Reveal About the Cost of Medical

What did a 2009 study reveal about the cost of medical care in the United States?​

A) ​More than half of people filing bankruptcy did so due to medical costs.
B) ​Medical costs caused hardship but not bankruptcy for most Americans.
C) ​People who had catastrophic illnesses never needed to file bankruptcy.
D) ​Only people without health insurance were bankrupted by medical cost.