Researchers Have Found That the Income of Obese Women Is

Researchers have found that the income of obese women is about 17 percent lower than that of women who are of the recommended weight. This result implies that:

A) the relationship between obesity and income is accidental.
B) obese women earn less because they are less productive.
C) obese women earn less because employers discriminate against them.
D) obese women earn less either because they are less productive or because employers discriminate against them.