Which of the Following Types of Discrimination Did Pullman Porters

Which of the following types of discrimination did Pullman porters not face?

A) Customers called all porters by the same name, regardless of their real name.
B) They often had to purchase supplies and uniforms themselves.
C) They were paid less than white workers and were required to complete some job duties without pay.
D) They often were discriminated against within the black community as porters were considered lowly.