Which of the Following Is Accurate Regarding Income Statistics

Which of the following is accurate regarding income statistics?

A) Current annual income is also an accurate indicator of relative economic status over a longer period, such as a decade or lifetime.
B) Inequalities of income observed at one point in time with annual income data overstate the degree of true income inequality in lifetime income.
C) Recent studies indicate that the relative income position of a family generally determines the relative income position of their children and grandchildren.
D) High-income earners generally maintain their status year after year, whereas those with low current incomes tend to stay poor year after year.