One Can Argue That the Average American Today Is "Richer

One can argue that the average American today is "richer" than the richest American 100 years ago,given that 100 years ago,

A) people's nominal incomes were,on average,much lower than they are today.
B) personal fortunes were not accurately measured.
C) many of the goods and services that we now take for granted were not available.
D) international trade had not yet begun to flourish.