C is the correct alternative.
Income distribution in America has always been a problem. Through the years, this hasn't changed, and income disparity is still a problem.
To put things in perspective, higher income groups get more of their income from variable sources like the stock market for example. That means that during the recession of 2007-2009, this group suffered a bigger loss than the lower income group, which didn't result in a lot of change in the inequality sector.
However, after the recession, the opposite is true: Lower income groups have struggled more than higher income groups, which makes the disparity nowadays even bigger. For this reason, alternative C is correct.
