The Shape of the "Age-Earnings" Profiles Reflect All of the Following

The shape of the "age-earnings" profiles reflect all of the following, except that:

A) earnings tend to increase with age but at a deceasing rate.
B) older, more experienced workers have higher wage profiles than younger workers.
C) the earnings of individuals with higher levels of education are generally higher than those with fewer years of education.
D) individuals generally continue to make human capital investments in the form of on-the-job training and work experience once they have entered the labour force.