Which of the following titles best describes the content of the passage as a whole
A．WhyDiscriminationAgainstEmployed Women by GovernmentEmployers and PrivateEmployersDiffers fromDiscriminationAgainst Self-Employed Women byConsumers
B．HowDiscriminationAffects Women'sChoice of Type ofEmployment
C．The RelativeEffect of PrivateEmployerDiscrimination on Men'sEarnings asCompared to Women'sEarnings.
D．The RelativeEffect ofDiscrimination by GovernmentEmployers, PrivateEmployers, andConsumers on Women'sEarnings.