Which Statement About Human Capital Is False

Which statement about human capital is false?

A) Human capital gives firms a way to differentiate between workers.
B) Workers accumulate human capital during formal education and through life experiences.
C) There is more human capital in the U.S. now than there was 100 years ago.
D) Human capital has a low rate of return.
E) Human capital tends to be an important determinant of one's wages.