What Has Been the Trend in U

Multiple Choice

What has been the trend in U.S.household incomes over the past decades?

A) U.S.household incomes have plummeted over the past decades.
B) U.S.household incomes have stagnated over the past decades.
C) U.S.household incomes have risen significantly over the past decades.
D) It is unclear, as income data are very difficult to collect.