In their study of Distributional National Accounts, economists Piketty, Saez, and Zucman find that national income growth for the full population was about 60% from 1980 to 2014. They also find that (select all that apply): Group of answer choices pre-tax growth for those below the median was around 30% pre-tax growth for the top 10% was around 120% pre-tax growth for those below the median was around 1% pre-tax income growth for the top 10% was around 30%